The one I would take out of it is Zarkander. Drifted like a barge on the exchanges and Nicholls was negative before the race. Ridden like there was something wrong. Stayed on like a train after the last. I think he will win next year with a more agressive ride. Nothing in the Supreme to trouble this current CH crop.
Looks to need further, imo, and will remain a 'nearly' horse (in the mould of Celestial Halo) at this distance.