1) Rotom-C 2x resists it, not 4x. 2) Rotom-C's only set-up move is Charge Beam, which isn't that great anyway. 3) They wouldn't stay in as it sets up, for fear of Leaf Storm. 4) Rotom-C has a deathly fear of Toxic, so it'll have to be careful switching in. 6) Every Pokemon gets beaten by something. For example, Rotom-W beats Excadrill. Doesn't mean that Excadrill isn't a fantastic Pokemon. 7) They aren't even they only ones beaten. Rotom-C beats almost all Water-types in the tier.