Biggest disparity between H2H abilities and actual rating

I don't know if you get what I mean.
An example: People always rate Vitali as a H2H-monster who could give every ATG his fits. But still many people don't see him as an ATG. A lacking resume, no signature win, lost two of his biggest fights, arguably not even the best heavyweight of his time, with his very succesfull brother, who has most of the major titles.
Are there any other examples like that?

 

Meldrick Taylor

 

These guys:

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What do you mean?

 

by these he means the 3 guys in the pic he posted

 

atsch I can say OK on Joe Louis, but you think SRR and Ali are low H2H:nut

 

Vitali is a good one.. Huge H2H threat, low ranking

I think that Holyfield would lose to many other highly praised HWs, but he is (should be) one of the highest rated..