It would be much easier to argue that those guys could play well in this era than it is with Russell, IMO. Centers are different. That's why I've already said I believe a guy like Pete Maravich could succeed, same with Wilt. If given time I could probably list several guys.
So Wilt could succeed but the guy that was arguably as good as him in the same era couldn't?
And with this little exercise of giving guys the benefits of being born later and with factoring in that players were measured without shoes then, we're looking at a 7'-7'1 250 or so pound super smart and competitive player with athleticism on par with a young Dwight Howard. Yeah, I think that type of player could do well now.