If he had a back like Yates, he would kill Heath...period. Nasser, when at his best, was one of, if not the MOST impressive BB'r from the front that has ever walked onstage. The only thing missing was desperation and detail in his back, as well as less than perfect conditioning from behind. No one had the mass of Nasser with equal aesthetics. No one.
When Ronnie weighed as much as Nasser, he had a massive gut, asymmetrical abs, and a less than pleasing shape in several poses, while Nasser's waist, at least while posing, was tight and symmetrical. Just look at Nasser in the FDB in this video. Absolutely mind-blowing. How many BB'rs who carry that amount of size in the FDB can be said to posses the freak-factor and beauty (for lack of a better word) at once?
I am not saying Nasser was better than Ronnie, but I certainly think he was in some ways, and in my opinion, if Nasser had a back like Yates or Coleman, he would have been better than Ronnie, especially with slightly better conditioning.
I can't think of a single 280 + lbs BB'r who had the aesthetics of Nasser. I am sure some will name Ramy, but I don't think so. While he certainly has a small waist and many of the characteristics normally associated with an aesthetic physique, Nasser was superior in this regard.