If i have an xbox live game on the windows phone (currently 7 but hoping to get a lumia 920 soon), and I also have windows 8 pro desktop, will the saved games sync between them so i don't have to start all over again? Does this apply to windows phone 7 and win8 desktop as well?
I don't think so. I downloaded Wordament on Windows 8, and it actually was treated like a completely different game. I even got two new achievements that I already had from the phone version of the game. It shows up as two separate games in my Xbox Live account also.
I even started a thread here, since I was confused.