The general reaction to Epic Mickey from both critics and players is "Great Basic Concept, but Poor execution"..which seems to be a pretty common thing.
The idea of the Disney Universe being destroyed by a embittered Oswald the Rabbit and Mickey Mouse has to save the Disney Universe is really good, but the fleshing out of the idea, from the reviews has been less then stellar.

Didn't I play a better version of that in Kingdom Hearts?

I thought he was gracious in addressing a criticism leveled against his game. He admitted it was imperfect, but that he thought his team did as well as they could.

I think it's clear from the many interviews he's given that Warren Spector is far more gracious and humble than most game developers. He's not tooting his own horn when he succeeds and not being offended and defensive when people level problems against his games.

Speaking of worst camera ever:

Mario Sunshine. I could NOT finish it. And boy did I try. I TRIED UNTIL I CRIED!

Fuck it. Even the CEO of Nintendo admitted that game was fucked.