They both fought Wlad, their best opponent perhaps. Definitely AJs. Fury did it first though. Wilder for me is better than anything else AJ has faced, especially in terms of the danger of the fight and the risk involved, and Fury fought him 3 times. Everybody wanted AJ vs Wilder a few years ago, yet as soon as Fury schooled him he was suddenly average etc. Yet AJ wouldn't fight him at the time. You'll probably claim Wilder ducked AJ, but I don't see why Wilder would have ducked AJ when he fought the better fighter in Fury 3 times, getting beat up a couple of times. Besides AJ has pretty much admitted it because the $50m apparently didn't make sense.