Having to lose Rescue Me in September and not having a show reach the same popularity of The Shield still since it ended years ago, makes this a positive move for FX IMO. A UFC night would be an excellent compliment to Sons of Anarchy starting this fall.
I agree that FX is better than G4, but I think NBC would have been better than Fox overall. You get in good with them and your talent gets to have roles on USA, SyFy, G4, and the other sister stations to get their faces out there and make them that much more known. Plus they would have their shows rebroadcast on Universal HD to go with their network specials