If we’re going off just what we saw in the cage then it’s not close. Unlike Fedor, Anderson, and GSP; Jon has no matchup weaknesses. Jon has beaten heavy hitters (DC, Rampage) wrestler/grapplers (DC, Chael, Glover), pressure fighters (DC, Shogun), Great-movement guys (Rashad, Gus, Machida), and fellow rangey fighters (Gus, Reyes).
GSP matches up poorly against wrestlers with big power.
Fedor matches up poorly with Wrestlers/Grapplers with big size
Anderson matches up poorly with Wrestlers, especially those who won’t lead or throw undisciplined strikes.
Even Khabib didn’t do it long enough to prove he can handle elite submission guys.