Alright, I've done a bit of digging and such, cos the numbers behind ASB is something I've never really gone into, having never reffed, so this is also something I am learning from... Bare with me.
So assuming Critical hits are double damage like they are in the games (I looked all around ASB for confirmation of this but didn't find it, hello Bulbapedia) and taking into consideration the Good/Excellent rating on the move list, and the x4 super effective, the minimum damage I received was 40 [(5x4)x2], and the most I received was 96 [(12x4)x2]?! Out of curiosity, what value did you use for Night Slash? I'm amused XD
Then there's the critical hit ratio itself. Lets not go into that XD
Anyway, this sorta (very vaguely) works in my favour, because of who I had chosen to send out next before I even saw Grawrr's new typing XD GO PANTSU, Male Scraggy @Moxie.
Go for Brick Break ~ Brick Break ~ Drain Punch. If he attempts anything physical, Counter.