i'd play brawl and other games first...than PBR. But if you want to show off your battling skills or test them then go ahead. TO be honest i love beating the snot out of little noobs who have no idea how to play. But then there are the japanese players who have perfect IV's/EV's and out-predict your every move -_-
But something cool about that is you can exchange your *trainer cards*...meaning you can see what pokemon stats/movesets your opponent used in battle...also meaning if you see a cool tactic someone used, you can try it out for yourself and see how it works and what yo can do to counter it. It just gives you better knowledge of the game.