After days of saying "no, I'm not going to read this event," I caved in and read it because the curiosity got the better of me. I'll have you know, however, that I still didn't pay for it. Take that, Marvel.
So I read the first two issues and the Avengers tie-in, and I fail to see where Steve Rogers is in the wrong on this issue. The Avengers, whether they're written by the incompetent Bendis or whoever, is the team that usually keeps the peace in times of crisis, such as this. They're Avengers. It's what they do. I understand that the Phoenix is a universal threat that the X-Men take responsibility for, but this time, Steve took it upon himself to try and handle the issue. Good for him. In fact, he even said that he wanted to work with Cyclops, which again, is smart because if anyone would know anything, it'd be him. Steve may have went on his island uninvited, but it was with the intension of speaking with Cyclops, trying to get his help. All Cyclops did, however, is make the excuse that "the Avengers never helped the X-Men ever" and that "the Phoenix Force can bring back the mutants."
I agree with Cyclops in the sense that the the Avengers never really made an effort to help the mutants during their time of need (Decimation and the Messiah Complex, specifically), but taking the chance that a cosmic force that can destroy EVERYTHING can POSSIBLY restore all the mutants? Come on, dude. I thought you were smart. That's just childish and selfish. I'm pretty sure Cyclops is the only one who feels the way he does, because even Magneto himself (you know, the ex-terrorist) wasn't to keen on the idea of this fight.
I understand that Cap brought all the Avengers along with him to Utopia, anticipating a fight, but with the way Cyclops has been handling things, and the way Wolverine described it, how could he not? Besides, it was Cyclops that struck first, which, I'll admit, I would've done too, but he didn't even bother to reason with Steve beforehand.
Maybe I'm just naive or it's just because I prefer Avengers to X-Men (not by much, mind you), but I really don't see how Steve is wrong here.