Anyone know? I think i read somewhere i could use the dropbox feature in Titanium and transfer it that way.
Yes, that is what I did.
Backup everything on the old phone then enable Dropbox in Titanium on your old phone and then sync to Dropbox.
On the Gnex do the same (making sure you have NOT backed up anything on the GNex yet).
The sync operation will download everything from dropbox and then be able to be restored (data only, app + data, or app only).
I was able to restore Angry Birds this way... keeping my current achievements (which I have had problems before).