Any Pokemon hit by Swagger lowers its Attack or just the Pokemon with the Contrary ability? Because can remember being a victim of that move and my Pokemon would take much more damage from confusion hits afterwards.
Swagger normally raises attack of opponents by 2 stages.
If Malamar used Swagger on an opponent, opponent's attack drops 2 stages.
If Malamar gets hit by Swagger, its attack drops 2 stages.
If Malamar used Swagger on ANOTHER Malamar... Swagger raises the attack of the opponent Malamar by 2 stages. And vice-versa.
Since their Contrary cancels each other out.