Did you go into the options? There's a toggle in AA to do it the way you described, and I imagine similar may've happened here unless the devs just sucked and failed to accomodate for the fact next to no one likes to use L2/R2 on PS3.So why the hell did they swap the shoulder buttons in the PS3 version? Here I am in combat, there's a guy on the other side of the room and I can't reach him so I'll just whip out a batarang. "Environment analysis, no subject detected." Combo reset. Fuck.
... Might be an excuse to get a DS4 now though if they're compatible with Arkham Origins.