Wolverine might have been able to kill one or two if he caught them off guard, but the entire team? Come on. Cyclops could blast him into next week, Beast and Colossus could pull his legs off, Gambit could charge his own skeleton if he got stabbed, etc. The X-Men didn't have ONE telepath around to just turn his brain off during this? The fight lasted for several minutes at least, enough that he was out of breath.