i honestly don't think zvt is worse then 40-60, might be just becaus ef low diamond but once you get timings macro and map control down it really isn't that bad. mech isn't particularly 1a2a, but it feels like that when 5 siege tanks roll out to your base when you have 10 roaches and 20 lings. that's just because your timings and feel for the matchup aren't good enough though.
just chippin in my zvt 2 cents here