He was better, not a single doubt about it, sthg that I think is so clear that there is no need to even bring it, but we can't say it always worked given how many times he was also part of why the team he was involved didn't work as a team as they should.
He was a better passer, a better all rounder, yet not exactly a fella (that like Mbappe also can't) could switch to a midfielder role (this is not the same as dropping back and start from deep) and be as good as he was as wild card powerfull forward, that in many ways it's the sort of forward Mbappe is (less talented and worse too sellfish many times for his own good version).
Some sort of wild card forward, extremely pacey, less talented but similar in being in that sort of niche. PD: Anyway Fort I do agree that R9s passing, one two's and even final ball is undervalued.
In any case the main thing here is that like Mbappe, he wasn't exactly a finisher with all around game and mostly reading like Romario, he was not a pure winger, he wasn't a pure striker. He was a menace from anywhere, yet he wasn't always (with a great quote of nostalgia) perfectly involved, even when surrounded by quite majestic players around and also needed defensive adjustments to compensate his approach.
Both are very much in the moment players in their peak, that use their extra athletism and talent to overcome and roll on rivals. On favor of R9, are not only that better passing, less sellfish and more talent overall, but also that he adapted way fast to be a more striker alike when his physique/fitness was letting his down, yet in his peak, both have similarities in being that type of wild card forward.
There are for instance nuances in Gullit (another powerful pacey "forward") or Romario more upfront stationary forward that made them diff. and more keen to get around any team or squeme to these two more speedy pacey counterparts when it came to actually involve others, or be more tactical, more intelligent all around players. At teh end of course I agrre that overall the french is extraordinary, the Brazilian just a genius, Phenom alike fella, but there are similarities.