I don't think that there is any comparison whatsoever between Ronnie and Health. Coleman is not know as 'The King' for shits and giggles and his eight Sandows speak for themselves. He is a mass monster and anyone who can take the stage as heavy as he did (in contest shape, no less, not a bloated mess) has no equal.
Heath may very well end up breaking Coleman and Haney's record, but that doesn't mean he could have beaten Coleman head-to-head. Heath has an amazing physique but a different one than Ronnie had. It's not really a fair comparison.