When you say his FLOOR is David Robinson you're either overrating Davis or underrating The Admiral.
Thats obvious hyperbole, but should Davis continue to progress as he has in each season of his career it's rather likely that he will reach (if not surpass) peak Robinson. They are alike in so many ways except AD is 22 years old which is even younger than D Rob when he entered the league. Sharpened defensive IQ and more comfort with his back to the basket (which he displayed in the Warriors series) should be expected growth for a guy who was already arguably the best player in the league this season, and that's enough reason for me to use Robinson as a floor projection rather than ceiling