Yes, I know that and I know ring savvy and experience count for a lot too as I have a bit of experience myself.
But in this instance, I feel somebody as cumbersome as Fury would seriously be found wanting against somebody with boxing ability, power and athleticism such as Joshua or Wlder.
He fought Klitschko when he was past his best, it was the ideal time for Fury. He cannot even get into the ring to defend his titles now, which pretty much says it all to me.
As if he wants to face any of the younger brigade! he will be totally shown up IMO.