Of course Epic has a right to ignore the Wii or PS3, it's business they make their own decisions people shouldn't complain about that. I don't really give a damn about them since i dont like shooters anymore (Unreal and UT were my favourite games few years ago), but they shouldn't justify it by saying that Wii owners would not buy their game, this is an idiotic statement that does not have any justification, they don't have any data to prove their point, hardcore games sell on the Wii everyone who thinks differently shows a bit of ignorance.
Gears is a decent game very fun but not somethin that would exite me , porting something like that would be stupid but making something from the scratch now that would be a challenge for Epic but they dont want to take any risks.
Wii fans shouldn't be offended that someone does not want to publish on Nintendo Console, we are getting much more 3rd party support then in previous generations, and if someone wants to miss out on that piece of cake fair enough. Just like Nintendo will always ignore competition.