Thing is Nasser and Dillet weighed roughly the same. And Dillet had a better shape-more aesthetically balanced. Nasser just looked like a big mound of muscle.
Also, compared to a 96 Ronnie yes he was bigger---but with the back shots, you can see that Nasser's detail stopped at mid back---and wasn't as deep as Dorian's or Ronnie's.
Also, that video has a different contrast than real life. Due to this, it makes any detail stand out and look more impressive than it is. When the reality is, the detail is not as impressive. It's an illusion.