Wouldn't be Thunderbolt more reliable?
Probably. Electro Ball, to me is only effective STAB. Since Mewtwo may not be as fast as ex. Galvantula it wo't be as effective as that. And Thunderbolt, on the other hand, can paralyze. In my opinion, Thunderbolt is more effective, I agree.
How to change your username
How to add a user avatar
Why was my post hidden?
Flags vs Downvotes
Official PokemonDb League
Type a Pokemon name, type, move or ability to see instant results.