
Each Race has 1 ground T3 unit, and one Air, I'll be going over both for each race.
Terran
The Thor:
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A walking tank, attacks both Ground and Air Units.
Cost: 300 min, 200 gas - 6 supply - 60 seconds
Ground Attack - 30 dmg - 2 attacks - Range 7 - Speed 1.28
Air Attack - 6 dmg/12 v light - 4 attacks - Range 10 - Speed 3
Armor - 1 - Speed - 1.88
Abilities: 250mm Strike Cannons
The Thor is a strong unit, not overpowered by any stretch, but a completely balanced unit in my opinion. The Thor is quite good in many matchups, including TvZ and TvP especially, as the thor Anti-Air attack does splash cannons, and the 250mm Strike Cannons are good for taking out Colossi. The Thor is a pretty commonly seen unit, and is overall worth its cost in both recources and food.
Cost: 300 min, 200 gas - 6 supply - 60 seconds
Ground Attack - 30 dmg - 2 attacks - Range 7 - Speed 1.28
Air Attack - 6 dmg/12 v light - 4 attacks - Range 10 - Speed 3
Armor - 1 - Speed - 1.88
Abilities: 250mm Strike Cannons
The Thor is a strong unit, not overpowered by any stretch, but a completely balanced unit in my opinion. The Thor is quite good in many matchups, including TvZ and TvP especially, as the thor Anti-Air attack does splash cannons, and the 250mm Strike Cannons are good for taking out Colossi. The Thor is a pretty commonly seen unit, and is overall worth its cost in both recources and food.
The Battlecruiser:
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A flying behemoth, attacks both Ground and Air Units.
Cost - 400 min 300 gas - 6 supply - 90 seconds
Ground Attack - 8 dmg - 1 attack - Range 6 - Speed .225
Air Attack - 6 dmg - 1 attack - Range 6 - Speed .225
Armor - 3 - Speed 1.41
Abilities - Yamato Cannon
The Battlecruiser is the weaker of the two terran tier 3 units. It doesn't have many uses, as it is quite slow, and the damage output is not fantastic. I experimented with Battlecruisers for about 5 games in TvP for an anti-Collossi build using the Yamato Cannon, and those are the only 5 games in which I've actually used them. A possible fix (this may have been done, I havent played since patch) would be increasing speed or attack damage. This unit doesnt have many uses, and is not cost efficient vs anything in my opinion.
Cost - 400 min 300 gas - 6 supply - 90 seconds
Ground Attack - 8 dmg - 1 attack - Range 6 - Speed .225
Air Attack - 6 dmg - 1 attack - Range 6 - Speed .225
Armor - 3 - Speed 1.41
Abilities - Yamato Cannon
The Battlecruiser is the weaker of the two terran tier 3 units. It doesn't have many uses, as it is quite slow, and the damage output is not fantastic. I experimented with Battlecruisers for about 5 games in TvP for an anti-Collossi build using the Yamato Cannon, and those are the only 5 games in which I've actually used them. A possible fix (this may have been done, I havent played since patch) would be increasing speed or attack damage. This unit doesnt have many uses, and is not cost efficient vs anything in my opinion.
Zerg
Probably the race that sees the least of t3 Action, here we have the Zerg.
Note: Neither zerg t3 unit attacks air.
The Ultralisk
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Huge Assault beast - attacks only ground.
Cost - 300 min 200 gas - 6 Supply - 70 seconds
Ground Attack - 15 dmg - 20 vs Armored - Range 1(Melee) - Splash Radius 2 - Speed .861
Air Attack - None
Armor - 1 - Speed - 2.95
Abilities: Burrow, Immune to Stun/Mind Control
The Ultralisk is a hard to describe unit. It is both good and its not, well really, its quite situational. The main problem with the Ultralisk is everything seems to get in its way. It is a great tank, and a great dmg dealer vs armored units such as stalkers or tanks, but it has alot of trouble getting there. This is the main flaw in the Ultra - it gets blocked by many smaller units, such as the zergling/hydra/roach and so on. My solution would be: Let ultras walk over smaller units, such as marines/zealots/zerglings and maybe some others. If that were to happen, I think ultras would be a great unit.
Cost - 300 min 200 gas - 6 Supply - 70 seconds
Ground Attack - 15 dmg - 20 vs Armored - Range 1(Melee) - Splash Radius 2 - Speed .861
Air Attack - None
Armor - 1 - Speed - 2.95
Abilities: Burrow, Immune to Stun/Mind Control
The Ultralisk is a hard to describe unit. It is both good and its not, well really, its quite situational. The main problem with the Ultralisk is everything seems to get in its way. It is a great tank, and a great dmg dealer vs armored units such as stalkers or tanks, but it has alot of trouble getting there. This is the main flaw in the Ultra - it gets blocked by many smaller units, such as the zergling/hydra/roach and so on. My solution would be: Let ultras walk over smaller units, such as marines/zealots/zerglings and maybe some others. If that were to happen, I think ultras would be a great unit.
The Brood Lord
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Flying attack beast - attacks only ground
Cost - 350 min 250 gas - 4 supply - 73 seconds (This includes all of the corrupter costs)
Ground Atack - 20 dmg - 1 Attack - Range 9.5 - Speed 2.5
Air Attack - None
Armor - 1 - Speed 1.41
The Brood Lord is a good unit, that hardly sees any use because of the extensive tech path. They are quite adept in matchups such as ZvT as a late game option vs tanks or so on, as the tanks can hit their own units being attacked by the brood lords. However; it is super easy for a brood lord to get sniped by a pheonix or viking, as they are quite slow. Overall they are a good unit, but the tech tree just takes far too long to get too.
Cost - 350 min 250 gas - 4 supply - 73 seconds (This includes all of the corrupter costs)
Ground Atack - 20 dmg - 1 Attack - Range 9.5 - Speed 2.5
Air Attack - None
Armor - 1 - Speed 1.41
The Brood Lord is a good unit, that hardly sees any use because of the extensive tech path. They are quite adept in matchups such as ZvT as a late game option vs tanks or so on, as the tanks can hit their own units being attacked by the brood lords. However; it is super easy for a brood lord to get sniped by a pheonix or viking, as they are quite slow. Overall they are a good unit, but the tech tree just takes far too long to get too.
Protoss
Finally for the last race - Protoss
The Colossus
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Huge walking tank, can scale cliffs, attacks only ground
Cost - 300 min 200 gas - 6 Supply - 75 Seconds
Ground Attack - 15 dmg - 2 Attacks - Range 6(9) (Splash Dmg) - Speed 1.65
Air Attack - None
Armor - 1 - Speed 2.25
Abilities - Cliff Walk - Can scale cliffs
The Colossi is a GREAT unit. Maybe even too great. I play toss quite a bit and I will hardly ever not go Colossi. In PvT they tear apart bio balls, and in PvZ they eliminate everything on the ground. They are an extremely mobile unit that really has one big weakness, and that is that it can be hit by vikings or corrupters and so on. Overall, it is a fantastic unit, in my opinion, the best tier 3 unit in the game by a long shot.
Cost - 300 min 200 gas - 6 Supply - 75 Seconds
Ground Attack - 15 dmg - 2 Attacks - Range 6(9) (Splash Dmg) - Speed 1.65
Air Attack - None
Armor - 1 - Speed 2.25
Abilities - Cliff Walk - Can scale cliffs
The Colossi is a GREAT unit. Maybe even too great. I play toss quite a bit and I will hardly ever not go Colossi. In PvT they tear apart bio balls, and in PvZ they eliminate everything on the ground. They are an extremely mobile unit that really has one big weakness, and that is that it can be hit by vikings or corrupters and so on. Overall, it is a fantastic unit, in my opinion, the best tier 3 unit in the game by a long shot.
The Carrier
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Flying Capital Ship, attacks both Ground and Air
Cost - 350 min 250 gas - 6 Supply - 120 Seconds
Ground Attack - Cost 25 min - 5 dmg - 2 Attacks - Speed 3 - Range 2 (Up to 8 interceptors)
Air attack - Same as Ground
Armor - 2 - Speed 1.88
Abilities - Graviton Catapault - Launch Interceptors
The Carrier is a weak tier three unit, on par with the battlecruiser. It is quite slow, and easily killable by hydras, marines or any type of anti air like vikings. It does do a decent amount of damage, but mostly when there are a great number of them, which takes a huge amount of time and money to get. They arent quite cost effective versus much, and could be much better.
Cost - 350 min 250 gas - 6 Supply - 120 Seconds
Ground Attack - Cost 25 min - 5 dmg - 2 Attacks - Speed 3 - Range 2 (Up to 8 interceptors)
Air attack - Same as Ground
Armor - 2 - Speed 1.88
Abilities - Graviton Catapault - Launch Interceptors
The Carrier is a weak tier three unit, on par with the battlecruiser. It is quite slow, and easily killable by hydras, marines or any type of anti air like vikings. It does do a decent amount of damage, but mostly when there are a great number of them, which takes a huge amount of time and money to get. They arent quite cost effective versus much, and could be much better.
Hope you guys enjoyed and I cleared things up for anyone who had questions. Also, these are completely my opinions, and I'm not QQing about balance or anything. I hope this helps, and feel free to give feedback.