I really haven't seen Epic hyping PS3 any more than the X360.
The only reason people get that idea is because UT2K7 was demoed at the PS3 booth, rather than the X360.
As it was.. the X360 already had GoW to display themselves. So X360 showed an Epic exclusive while the PS3 showed a cross-platform game.
How is it again that people are getting the idea that Epic is hyping PS3?
You'd have to have some real dark Sony Specs on to come to the conclusion that Epic is pimping the PS3 with that information. And you'd have to be soaking your head in a toilet to still believe it when every interview Epic makes a point to reference the X360, even if the interview is about the PS3.
If anything, I'd pissed at Epic if I were Sony. No exclusive, constant mention of my competitor, etc.. Sony, unfortunately, can't really do anything because Epic makes the best engine.