Why would you make fun of something for being a certain way if it couldn't possibly be any other way?
When was I making fun of it? Saddam made a basic incorrect assessment, that Oblivion is generic fantasy (it is) but that somehow Morrowind isn't (it also is). This entire discussion has been a result of that assessment and you appear to be arguing that Morrowind is in fact not generic. If you believe it is generic, then I don't really see the ongoing point of the discussion if we all agree TES is generic fantasy and can move on.
So not all art is equally unique?
Yes. Some art includes more novel material than others. (Once again noting novel != original)
Edit* Changed "no" to "yes"