nandroid doesn't work between models, it's an exact image flash of the operating system.
Titanium is a app by app backup, between different roms I wouldn't restore any system apps or core pieces. I would select like 10-15 of my apps and restore the data only after the phone restores all the apps for me on initial bootup. Restore the app data for say, tapatalk will have you logged in already. Though tapatalk is great now and it remembers the whole forum thing for you. But if I don't feel like logging into 15 apps, I restore their app data.