You've never played it then? Texture detail and tech is way above Skyrim, it even uses physics for the grass, hair, POM for the terrain, DX10, crowding NPCs. As for AI, well, Skyrim is far from perfect as well.
You're really comparing http://www.platformnation.com/wp-content/uploads/2011/01/two-worlds-2-screenshots.jpg to http://4.bp.blogspot.com/-fnAQ2LTvD_E/TvujF7fZE8I/AAAAAAAAADY/xVTus8NqL8w/s640/skyrim-awesome1.jpg? And that's not even mentioning some of the horrifically bad animations. I actually did try playing Two Worlds 2, because every review said it was better than the utter mess that was Two Worlds, and it was about average. Nowhere near Elder Scrolls quality, in any department. And the funny thing was, if I had read those reviews more closely, I would have seen that the only positive things about the game were that it improved on the original, which wasn't that hard to begin with.
No one has been claiming Skyrim is perfect, but comparing it to that piece of junk is an insult.