while on the surface, the tac squad is seriously at a disadvantage to the ork shoota boy. I understand, that 60ish strength 4 shots sounds brutal. but you're forgetting the ultimate counterweapon to a horde of orks. You need to deploy your mighty mobile bunker of the emperor, the rhino. Watch as the pathetic orks bounce off the sides. I know first hand, as an ork player, the worst situation is having to assault a rhino. leaving my orks high and dry for rapid firing or counter assault.
There is a fine line though, because if they can surround the rhino and wreck it, everyone inside is dead. or i they fail to judge the distance a disembark too soon then blam kill in the tide.
Big Shootas give you a chance to imobilize it.
Chaos- Black Legion & Steel Brethren
W:16 D:7 L:9 W:9 D:2 L:5
Eldar Dragon Claws Corsairs
W:16 D:4 L:2
Da Skull Krushaz
W:27 D:2 L:13
W:14 D:0 L:3