Actually, I definitely like certain parts of the art style of Enemy Territory: Quake Wars better than what I've seen up to now in Unreal Tournament 3 too, probably because it's a tad more realistic and has a cool color-scheme. The metallic looking surfaces and the futuristic army stuff is done really well. However, I wouldn't say Unreal Tournament is uglier... it's just a different style and technically it's more advanced.

You are right about enjoying the game(s)!

Cheers