Yikes. Didn't think my Gambit fandom would be called into question. In my mind, the story I envisioned would have had them both competing to steal something (but, from the criminal underground), each with valid/good reasons, but, nefarious on the surface. When they'd inevitably run into each other, it would be competitive and contemptuous, but each would use their wits, and wiles against one another. In my mind, Remy would be using his charm to try and woo Catwoman, who'd play along, before fighting dirty (as she's apt to do), giving her a momentary advantage, allowing her to flee, for Gambit to give chase. It'd be cat (not pun intended) and mouse. Obviously, I don't think Selina could ever actually beat Gambit in a full out legit fight. The crossover concept was more of an idea based on their similarities...in the end, they'd likely wind up allies and possibly a one off fling.