Pretty good, I must say. Good level (in the 70s) and beat him pretty fast (skip to 5:00): You can get 480p if you go on the video page itself.
You took that much damage at Lv70? What the heck, were you playing on Insane mode? Plus....why did you wait that long to fight him?
Sora's defense was in the middle 30s and Donald and Goofy's defenses were in the low 40s. You can see their equipment here: Some of the levels were acquired from the previous Hades Cup seeds, but I also did a lot of off-screen fighting to gather materials to complete the synthesis list.
