Batman vs. Catwoman, Harley Quinn (with powers), and Batgirl (Barbara).
1st, can Batman win? with prep for Barbara and without prep for Bruce.
2nd, After the battle, the girls somehow got a hold of Bat's utility belt and escaped. Can Batman retrieve his belt when Catwoman is running off with it (since she's the escape queen) and Barbara and Harley Quinn again tackles him. (since Barbara has weapons and Harley has the muscles)
1st. Batman might stalemate the 3 in a fight.
2nd. Batman can't retrieve his belt. Catwoman is a good fighter but not as good as Batman but chasing and capturing her is a different story, she can escape him all by herself. Then add in Batgirl and the superpowered Harley to stop him, it'll be impossible.
Why do poeple still do that? Of course it's obvious that it's Batgirl Barbara not Oracle. And it is already written above. And it's not about the possible scenario, it's about can Batman beat them and can he catch Catwoman and retrieve his belt.
And it was the girls' plan all along. While doing it Catwoman locks Batman with her powerful tighs and Harley Quinn who wasn't really ko'd snaps his neck with one hand.
Batman would split Catwoman in half and while Quinn believes that she is sneaking up on an unexpected Batman, Batman will turn around punch her out the window of the hotel he split Catwoman in half and she will land on a proximity mine Bruce planted there because he already had this planned out eons before he even existed. How is that possible, well cause he's Batman, duh!