If you used Outrage with Haxorus with the Ability Mold Breaker, then that is why you KO'd it. Mold Breaker negates the abilities of the opponent pokemon. If this is the second time, then the same goes for Zekrom and Reshiram, as their abilities negates the opponent's. If you didn't use a pokemon with the ability Mold Breaker, then your game is glitched.