Copy and paste models are all well and dandy, but many of the game's mobs in both games have existed for decades. Morbols, Tonberries, Drakes, Ahriman, Gigas, Behemoths, among many, many others have all been around a really long time. There is almost some kind of reiteration of nearly every mob in the game that comes from a previous FF installment.
And If you're talking lv50 AF armor, most of those are inspired from previous FF games dating before XI. Some back as far as FFI. FFXI took from those concepts. I won't even give you races. They are all humanoid, which is what the playable characters in the franchise have always been.
I strongly suggest looking outside XI before telling me to stop kidding myself. Reading your post sounds like someone who thinks they know Batman after watching Batman Begins.