Thor, Hulk an Iron Man are the problems
@DBZ_universe: I think in this case it could go either way imo
If the Avengers hit hard and fast enough, they could kill him. Thor and Hulk can definitely damage the fox. And while Iron Man's weapons might not do as much, they could still help some. But this version of Thor and Hulk have their limits. I remember everyone ganged up on Thor and it was enough to K.O. him. If he takes a high power hit from the 9 tails, he should go down. And while Hulk is a bit tougher, even he will have trouble getting nine tails to go down and could very well get done in by the Bijuu Bomb.
@SpeedForceSpider: What do you think?
EMH Avengers Vs full power Kyuubi with no prep