Derp. No, Competitive heart only rises de Attack +1, no +2.
Kirikizan with this abilty nullifies Gyaras' Intimidate (that does -1 in Attack), so he can't get any reducition from Gyara.
The same for Wargle.
Anyway, I think that the self-effects of Trash and Superpower are ideal for use U-turn.
Another thing useful, at my point, is Free Fall.
Works similar that Fly, but the opponent can't do nothing in the turn that is in the skies.
Well, altrought Wargle have things "that-i-dunno", can be a good PKMN.
See you.