"Bu has perfect age, ca. the same as Aronian"
But soon turning 32 and never having been top 20 I doubt that his prospect are too promising as future World Championship contender. He won a nice game against Carlsen, but I would be very surprised if he beat Svidler, and even more surprised if he beat MVL/Grischuk.
I think Magnus will dominate the chess world for some time. He will be well prepared for the match.