Does NIS2013 have better protection than NIS2012

After being thoroughly annoyed by NIS2013, I decided to stick with NIS2012.  My question is - does NIS2013 have more secure firewall and AV abitilties, or are the changes just cosmetic/toolbars etc.  I've just built myself a new PC which I've put a lot of love and attention into (i7-3770k, 16GB, GTX680, SSD + RAID), and I really want everything to be perfect, so I dont want to compromise security.  So what is the verdict on the security capabilities of NIS2013 vs NIS2012 ?