Final Fantasy has several very strong titles, and given the amount of Final Fantasy games in existence, you could say it wins on sheer volume. However, there are many other great RPGs that are not Final Fantasy, certainly many that trump even the greatest of the Final Fantasy series. If you're going by series, yes, Final Fantasy wins, again, just due to the sheer volume and quality. But overall, there are many RPGs that are just better than what any Final Fantasy has to offer.

Oh, and as I recall Dragon Quest came before Final Fantasy, so Final Fantasy is not the precursor to other RPGs.