well not for every attack but his ultimate move,sin harvest is so deadly that it can kill you in less then three seconds even if ur at level 100,full hp,and have aeroga on.As soon as he says sin harvest dodge roll at him quickly and hit him,and the attack is cancelled.Except for that attack,if u got skillz u can whip him with ease

Kurt Zisa is easy..The Phantom is a little tricky cuz u can only use magic and he will silence ur characters to oblivion if u dont freeze hands on the clock.hes not that hard though.jus be at a high level.....I wonder how strong sephiroth would be in kh2...i wish u could play as cloud...