Meh, I think it was mere luck. >>'.
Tangrowth is a Physical Wall, Snorlax is a Special Wall. Honestly, I messed up big time while training them on their EV's, svrambling their defenses a bit for a while. I was going to breed new ones but in the end was like 'Oh, whatever'. I ended up liking the results, though. Lulz ^^'. Anyway, when Draco Meteor failed and 2 Nasty plots were up I was all 'Owned...'. Same when Power Whip missed like 3 times ><'. I was also expecting a Choice Item on Lucario, so when he survived I got nervous. xD.