EPTsunk does 20 damage to marines, so if microed completely perfectly(tested and confirmed this), 2 sunks kill a marine in 1 'bomb' (using muta micro terminology), rather then 3 killing one.
sunk WOULD kill med in 3 shots, but the med starts off with +1 armor, so it only takes 19 damage. meaning 4 shots kill a med in one 'bomb'
maybe there we would even learn how different angles and things like that effect sunk's shooting, and timing we need to press 1rightclick2rightclick. imo its something relatively simple that can change Z metagame
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zergs micro sunks all the time. at least I do when playing zerg, and not just vs terran.
