It used to be popular (and maybe it still is) to "carry" a lower level pet through these high-end trainer battles to get some big XP upon success, obviously assuming your low level pet didn't get KO'd during the encounter. I've tried that strat on most of the trainer battles in Pandaria, and in my opinion it isn't an effective way to level a pet if you're going for speed.
With the exception of this particular trainer!




