Heath had a better presented back at the O this year. But IMO Kai has a way better back, even if his traps need to be bigger from the back. His lats are unreal and insert like Franco's, whereas Phil's are less remarkable. Phil brought the conditioning though so he was rightly rewarded.
I personally think Kai DOES have the best legs and back. It just didn't mean as much as it should have this year because of the conditioning issue. In fact from prejudging Phil was the only one who turned up really sharp?