In terms of names on his record he's way ahead. Considering the number of fights he's had, his resume shyts on someone like Wilder. If you take high risk fights you may lose but at least you taking them, I respect more a fighter that will go in and fight anyone rather than cherry picking and padding their record. He's showed he's better than Ruiz now quite conclusively with a hugely dominant performance and wide decision. Now it's over he's admitted had health issues the first fight too so makes more sense, was clear something in some way was wrong with him that first fight.
Fury's beat Wlad which he deserves credit for and Chisora is a good win. I had him beating Wilder too so will even give him that but his level of opposition consistently hasn't been as good. Fury only really had those 3 notable names. The rest are subpar. AJ has Wlad, Parker, Povetkin, Ruiz, Whyte which are great wins. Then he has Takam, Martin, Breazeale, Molina on his record too, in just 23 fights this is exceptional, not just for a current heavyweight but of all time, a lot of people don't take proper fights for ages, Wilder is the obvious example, AJ after a certain point just started taking only serious fights. Not even mentioning the fact he's an Olympic Gold medalist. Tyson Fury has had 30 fights and has a weaker record. Wilder has the weakest of the top heavyweights, his record is a joke, Ortiz, who's questionable as it is.
Even if you look at AJ, he beat Whyte who on record Chisora lost twice to, second a knockout, and that's either Fury's 2nd or 3rd best win depending on whether we are counting the Wilder victory he should have been awarded.
Not to say anybody is conclusively better, but AJ has fought competition that are ranked factually higher. I think there was a list that AJ in much less fighters has fought by far the most out of those in terms of top fighters, infact I think he's fought and beaten more top 10 ranked opponents than both of Fury and Wilder put together.