Recovery nand backups are for recovery. Say you want to flash a new rom and you aren't sure if you will like it or it will even work. If you have a known good setup then nand backup so if something went wrong you restore and its like you never left. Titanium is for when you flash a new rom you can add your apps back in with their data so you sony lose your settings or place in your game. Useful if you forget passwords too. It will already have the password and you are already logged in to whatever app it is. Also titanium let's you destroy bloatware
sent from MY BAD A$$ ET4G