XMB is way better imo. The thing about 360 is that it takes forever to start up and sign in when connected to the internet. I can turn on my PS3 and load GTAV and start playing it by the time the 360 turns on and signs me in. Also, I really hate the dashboard on the 360.
The thing that gets me the most is the stick man with the jetpack. The lines on the mural are so complex and no one can figure out what they mean, especially the line that connects the UFO to the jetpack. Now a HUD has been found that is very convincing that there is a flyable UFO or something. Here it is over a screenshot.