Considering that PS3 has only one exclusive game at its Top 10 best sellers (GT5), and the 360 has 4 of a single franchise (Halo), I wouldn´t say your friends arguments are stupid.
I know many people that bought the PS3 because of the BluRay and the 360 because Kinect Dance and Fitness. These are "exclusive" features and they sell consoles just as exclusive games.
As hard is for some here to belive, a lot o people will buy the Xbox One because o TV integration and Kinect gimicks.
PS: I almost forgot about the Wii Fitness.







