What is the difference?

what is the difference between the "comcast norton internet security suite" and the "norton internet security"?  right now i have the comcast version but before i had NIS 2011. it looks like i have two new features. the back up and pc tune up which i dont think i had with nis 2011. so does that mean i have the 360? which one is better at detecting spywares? or has better firewall. or is that all same? can anyone fill me in.