At what point will Anthony Joshua being four years younger than Wilder become a major advantage?

Bingo. His fundamental flaws are glaring and sadly, haven't improved.

He's nowhere near as athletic as RJJ was, but look at the swift decline Jones faced once just a bit of reflexes went away. He got sparked by Tarver and was completely shot ever since.

Same thing will happen to Wilder. Guys with good technique age better.

 

I am starting to wonder if Hearn is keeping a really close eye on progress, the fight will probably be made when Team Joshua feel that it's taking effect but they get to capitalise on it before it becomes noticable against a "lesser" fighter. The style Wilder uses is definitely one that age will take a big toll on when it starts coming into effect, from 35 it could well be a factor - and it wouldn't shock me if the fight isn't made until nearer then.

That is of course if Wilder manages to get past Fury.....

 

I don’t like to over generalize but that sounded fairly accurate.