I have the wii hooked up to the other tv. I don’t play any FPS on the wii anyway, so I don’t think I would be able to tell. It’s also a different resolution and a different port (which both would affect the lag in different ways).
It’s not an accurate comparison, but I will hook it up when I get home.
I’ve already called for them to come pick the tv up anyway. I’ll do more research before I buy another tv. However, if anyone is looking for an awesome deal on a good tv (it really does have a great picture) that is horrible for fast paced gaming.. Amazon has a great deal on a LG 50″ 3d plasma with two pairs of glasses for around 1000 with free shipping.