I would more say that WoWs art is simply more interesting to look at, and that is why it was Everquest 2 that waved the white flag, by announching that their dropping their monthly fee this week. In 2004 when these games where released head to head, WoW was shunned and laughed at for it's graphics, but as things have turned out, Everquest 2 was a boring mishmash of grey, black and brown generic fantasy with little personality. It's a great game actually, and it deserves to be played, but WoWs graphics have lasted so long because I believe it's simply more interesting to look at colorful areas, fight exaggerated but unrealistic monsters, and play as characters that might not look realistic or like in Lord of the Rings, but have tons of personality, warmth and breathe to them.
Just want to praise you for the way you described WOW graphics, it's exactly what I think and why I love the game. I have looked at games like Aion, Tera, and even if the graphics are more advanced and high tech, they completely lack, at least to my eyes, personality, depth and even fun.