Both games support widescreen quite well.
I really wanted to like the superior tech of EQ2, but several game mechanics, specifically the locked encounter system, really turned me off. I'm a vet of the genre going back to the Ultima Online beta test, I've played most of them and WoW is one of the best I've ever played. A nice mix of EQ monster bashing and item collection and UO player-vs-player war.
WoW beats EQ2 in style, hands-down.
I'm also using the logitech mx duo (non-BT). I have a pillow+harcover book that supports the mousepad next to me and the keyboard just lies in my lap, works great for me.
There is some overscan issues with the default UI (on my sammy hln617w), but not enough to be a game-breaker at all, and there are user-made UI mods that can remedy the situation by letting you move UI windows. Pet peeve when games push all the UI elements against the screen edge and don't allow you to move them in a millimeter :)