Don't shoot me but I own a 360, and I understand what they mean. I have an HD set, and that was actually a factor in buying my 360. The 360 was designed to be able to output some damn nice HD images. If a 360 titles isn't doing at least 720p? My care meter is going to drop like a BRICK! (That is, of course, unless it's awesome). By contrast, when the Wii comes out. it can not do 480p and I'll still pick it up. Why? Nintendo nevre stated Wii is all about the HD. In 2007 when I get my PS3 (Yes, I'm serious. Unless the titles by then don't support my decision) I will have the same stance toward titles for it that I do with my 360.
Now, does me wanting the most out of my system designed for HD make me a graphics whore? I'll let you decide that one. Trust me I'll be here to defend myself if I hear something that fails at the sense making.