I respect the olds and their era, but sorry I think otherwise.
I think these two giants probably will not be exceptional bigs in todays NBA. They have a long way to go in terms of skill/moves.
These two giants do not even have a spin move and they can't dribble with their non-dominat hand. They look awkward and probably will trip on their own foot if they try to do what the great bigs of today do. Also, look at how slow everyone moves. Sometimes I wonder if all the clips are slow-motion-clips because everyone seems to be too late to cover their man. Games look like very much the All-Star games of today where defense is non-existent. Can we really say this kind of defense can stop the likes of Howard, Duncan, or even Cousins in a real game like say the playoffs?
I think even the smaller players like Lebron James and Michael Jordan will posterize both centers many many times in a game if they want to.