Originally Posted by Prime Junta
Yes, 1080p on a 1920 x 1080 full HD panel will have no scaling. However, the XBox 360 doesn't actually render games at that resolution: they'll be scaled up from whatever resolution it does render them. This scaling may or may not be better quality than what the monitor can do internally. IOW, it won't be perfect in either case, and it may not even look dramatically better than what you're seeing now.