I prefer to use Batman. While I like how fast Catwoman feels when you are in combat I feel she could have used a bit more variety in moves,gadgets,etc. I also prefer to use Batman simply because you can get new moves and upgraded gadgets where as Catwoman all you can really upgrade is her health. My final reason for why I prefer Batman to Catwoman is that she's nowhere near as fun traveling around Arkham City with. With Batman you can glide, dive, and zip line across the map where as Catwoman you just whip your way around. I know that you only use Catwoman for short periods of time, but I still feel that they could have at least given her a few more gadgets and moves.