Yeah people consistently don't realise this - Fury's best win was confusing Klitschsko on points. Wilder is atrocious, always has been, his career the most padded record you'll ever see at the 'top level'. Joshua/Whyte/Usyk beat him fairly easily barring one lucky punch. What makes Fury's wins over Wilder decent are that they were away from home and in varied ways.
But yes, Fury has only beaten two notable people in his career (three if you add Chisora but... meh) - one of whom Joshua knocked out 18 months after Fury danced around him for 12 rounds, and the other a technical novice with a power shot and nothing else. This isn't the reincarnation of Muhammad Ali we're talking about here in terms of boxing record.
Fury/Joshua is still a 50/50 fight to me in every way.