[quote name='TimPV3']Wasn't GTA on PSP made by Rockstar Leeds (sp?), so it really doesn't matter which Rockstar works on it?[/QUOTE]
The core console series is Rockstar North's baby.
It does matter which division of does a game. Remember, that most of their divisions used to be totally separate companies altogether, before Rockstar/Take 2 bought them. Rockstar Leeds used to be Mobius Entertainment, Rockstar San Diego used to be Angel Studios, Rockstar North used to be DMA Design, et cetera. It's not one big company, but a lot of totally separate companies under one banner.
While they may have handed the portable GTAs off to other divisions, I think Rockstar North will jealously guard, and keep, GTA on consoles as "their game."