Am I the only one who wishes these crappy X-Men films would end? They need to reboot it and just pretend all the previous movies never happened. Seriously, Professor X died but sent his mind into another persons body. Fine, but why does he sound the same, look the same and have the same powers? If he transferred his MIND and MEMORIES into a nonmutant's body, it would be logical for that new body to possess no powers whatsoever.
the explination for having the same body and look, its because the director of X-Men 3 said that the guy who xavier transffered his mind to is his TWIN brother. thats why he looks the same.
(but doesnt explains the power and how he got bound into a wheelchari again, but they promised to give a better explenation in the film)