i hear ya but I'm saying that a team like this is way outta most people's league even the FF because Hulk alone can give them large problems.
Even the X-Men by themselves have problems taking Juggs down. This is Juggs fights with X-Men go they gang up on him he throws a few of them around because he normally has something else to do and he normally doesn't fiddle with people that aren't on his priorities. Well then after a large effort they finally get that helmet off and then they use telepathy on him. Hulk he normally gets tired of fighting and leaves or starts to go back to Banner than leaves. Together as a partnership these guys aren't gonna do that becasue now there are two of them meaning they can gang up if they have death on the mind thier are gonna be a large number openings in the X-Men after that and probably the fantastic four could become the fantastic none.
Hulk cant touch the modern FF. That would be a joke. Back in the day when the Thing was lifting 5 tons, the Torch couldnt stay aflame for longer than 30 minutes, and Invisible GIRL passed out from stress every issue, then Hulk could give them trouble. Since the Byrne days it simply wouldnt make sense for the FF to lose to the Hulk. Well actually the FF did beat the Hulk back in FF #160 something, like right before the return of Galactus.
lol that goes without saying Paeng lol.
The roster hasnt been laid out so pretty much all of the Xmen currently alive and on the planet are assumed to be involved and they along with the F4 would most certainly take out the hulk, but not without some casualties. Juggs helmet can be removed by telekinesis and he can then be taken out of the picture by psionic means. The hulk isnt indestructible. His skin isnt as durable as colossus' for example its just that he has a mad healing factor that makes up for it. With the likes of human torch, havok, polaris and storm, serious energy wielders like that hav ewhat it takes to put him down. Hulk has been punked by Xaviers telepathy before and it could almost certainly be done again in an all out battle for survival.
It wont be a walk in the park by any means but the two teams will almost certainly win due to the teamwork and experience of the F4 and the sheer numbers and variety of experienced powerful mutants in the Xmen.
Paeng if Phoenix was involved she'd take them out singlehandedly thats why i think most of us arent considering her in the roster of X-men. Shes not currently a part of the X-men or even on earth anyway at the moment so she shouldnt be used anyway. Since the thread starter never stated the roster its just an assumption that its all members of the X-men on earth.