The main proviso being exactly how much Wlad has got left in the tank after this kind of prolonged break and whether the 40 marker represents a big drop off in his athletic ability.
Vitali rolled through the big Four-O just fine and it is tempting to think Wlad is made from the same stuff and has been just as professional/disciplined. The brothers have both arguably managed their bodies and careers in a way that sets them up for longevity.
But Wlad has had a very different kind of career with more camps, more fights and some of them much harder.
More miles on the proverbial clock basically.
Just not sure what were going to see from WK next time round and that keeps it interesting.