I think it also depends on peoples hardware. Now the DP blew my head off how fast it was on my netbook starting up but then the CP takes off and extra few seconds! the login with the DP took about 10 seconds so I always used hibernate, but with the CP it is 4 seconds if not less logging in.
HAHA that is obviously one thing in common with all us mac users. ;) just like me LOVE Metro. I hated the traditional task bar start menu, as it took me AGES to find what I was looking for but with the Metro Start screen, Everything is in one place.
I love everything in fullscreen and ok ok windows has had full screen a lot longer than mac, but Metro is really the start of Microsoft getting it right.
I love how Apple has done fullscreen as at least you can still access basically all the functions without having to come out of fullscreen unlike what I have had to do with windows a lot when I try using the fullscreen.
Which I love the Metro fullscreen interface on my iMac 27".
Now I do not know about how much of ann improvement the CP is starting up in bootcamp to the DP, but what I do know is that in parallels desktop, the DP was taking as long as xp did to boot up in parallels, but the CP is just as fast starting up as on my netbook.