If someone used memento on your Wargle, wouldn't it's stats be at +0 Attack and -2 Sp.Att? -2 Attack for memento activating, and +2 for Competitive Spirit activating leaving its attack at +0.Was it a typo? Because I'm pretty sure Competitive Spirit raises Attack two levels upon each activation.
EDIT
And a third test :
Wargle vs Steelix
Wargle moves: Superpower, Whirlwind, Brave Bird, Thrash;
Steelix moves: Iron Tail, Crunch, Double-Edge, Stone Edge.
normal conditions: Wargle used Brave Bird
Steelix took 46 HP
Wargle took 15 HP from damage recoil
waited and stalled until Crunch or Iron Tail lowered Wargle' Defense, when it did Competitive Spirit activated and:
Wargle used Brave Bird
Steelix took 91 HP
Wargle took 30 HP from damage recoil
So Wargle was at -1 Def and +2 Atk.
On a related note Competitive Spirit activates on Memento (giving +2 Atk and -2 Sp.Atk for its user).
EDIT:
If that's how it works then that is awesome sauce.No, since Competitive Spirit raises by +2 your Attack for each stat drop, regardless of the level drop of said stats.
This means that against Memento, Competitive Spirit will activate twice:
_once for the Atk drop (-2 Atk then +2 Atk, effectively neutering the Atk drop);
_once for the Sp.Atk drop (-2 Sp.Atk then +2 Atk, so Atk is at +2).