I think he has the palmares.He doesn't even have the palmares for those positions... If he crashes tomorrow and can't ride a bike anymore. Would you still have him on 1 or 2 in 20 years? No. So unless he gets the palmares to match the position, there's no reason to put him that high.
And what he definitely has is the domination he has shown during his active years during an era where the sport was not fully mondial but at least way more mondial than during the era’s of most riders mentioned above him.
You just cant value a Lombardia win in 1922 as high as you should value a current win.