lol
seems like turok has never seen the fs + naga + mass grunts to tauren strat against human. lol, it's just ownage most of the times the rush succeeds.
and WTF, since when does a arcane tower prevent someone from harassing? LOL micro > towers
the way humans pwn orcs is going air / breakers or slowing all their army, but that's just dumbshit as there is drow ranger / spirit walkers available.
ORC > HUMAN > UD > ORC
and NE > ud, orc, human, naga, protoss, zerg, terran, romans, vikings...

they are just imba :hop
(for the pro players part, try watching Rex.Zacard x SK.Insomnia replays)