Xbox Metro Against Windows 8 Metro!
Just looked into this thread and found a nice implementation of metro screen here on top page.
The following is what I think differentiates Xbox Metro from the Windows 8 Metro:
1. All the Page headers are grouped next to each other. Now, that's cool for me.
2. The next screen to the right seem to have been differentiated from the active page, by dimming the background color . That's quite good as well, compared to the implementation of metro on Windows 8!
3. Clean screen organization, with lot of space left at top and bottom and nice tiles organization.
4. Application title to right of the screen looks quite good as well compared to Windows 8 way of putting it to the left of screen.