He's not some unbeatable mythical fighter but he is really really good. He sonned Wlad, and when Wlad tried to engage put hands on him. Had a draw with Wilder where he got KD twice, but won every other round. Rematches Wilder, beats him so bad that Wilder thinks Fury had weights in his glove. He also beat the bravado out of Wilder, causing him to act bytch made and a sore loser.
He can lose to AJ cause his biggest weakness is left hooks, but he's the best HW over the past few years based off his wins over Wilder and Wlad.
Fury is at his best against top competition, hopefully we get AJ/Fury, because that'd be a good fight. I'd have Fury winning that.