Nobu Sato is no doubt a coaching great and has worked wonders on many skaters, but sometimes a great coach and a great student doesn't always mean a great partnership. I don't want to go too much into detail but lets point out the facts he has failed to give Mao a 3Sal or a 3Lutz. Under Tarasova
Mao at least had a working Slachow, and didn't get edge calls on her Lutz (as inconsistent as it was). Mao had those jumps in under a year with Tarasova, and Mao had to sacrifice a year with Sato with no other significant improvement in her jumps other than her Flip.
But my problem with Sato coaching Mao is that he has changed many of Mao's traditional qualities. Like the rise and fall of her knees, something that I always thought helps her to gain speed.
2008: http://www.youtube.com/watch?v=DfZNA...eature=related - her dificulty and quality in her spins have also declined under Sato
2011: http://www.youtube.com/watch?v=qKVVFyB8w94 - notice her back posture is very forward