[quote name='Southberm']I have a DLP 720p, and ive played my 360 on my friend's 1080i CRT. From the second i booted up my COD2 i noticed a huge difference in graphical ability. The 720p seemed lightyears ahead, and all the other games I tried proved no different. IMO 720p>1080i[/QUOTE]
I think it probably has to do with the fact that since you have a DLP, your TV is somewhere between 42"-70" and your friend has a CRT which is 35" at most.
While 720p is supposed to be better at moving, and 1080i is supposed to be better at still, supposedly most people can't tell the difference.
Personally, I have a 26" LCD and a 30" CRT and I can't tell the diffrence when playing 720p/1080i on my LCD or playing 1080i on my CRT.