both should be pretty similar consider both will have M&KB support and mod support. PC most likely better graphically though, but that will probably cost more money.
Well, I said I'd get it for the PC in another thread, but I'm thinking... it just might run better on my PS3 (see my PC specs below).
There's always the option for a FragFish for my PS3 so the kb/m argument is out of the window...
UT3 is supposed to have KB/Mouse support on the PS3 anyway.
Getting this one for the PC thats for sure also. Unreal Tournaments were always the best on the pc. Mods, Maps, and all types of stuff is what i am looking forward to also. When it comes to fps, the pc rules in that category. Without the user created content the game would get old after the regular content got used and abused. Atleast sony knows the pc's strong point and supports pc to ps3 content. Not so sure though if any of it would be compatible lol.
All the time
This month's magazine of EGM states that Sony's PS3 does not run UT2007 engine very well and that Sony is tipping Epic a "money hat" to ensure it works well on the PS3 by the time of release.