There is a small, almost unnoticeable difference: other systems don't require an internet connection to play offline. So if someone asked Kaz what system someone should buy if they just want to play offline, he could answer PS4 without any problem. He could also answer any other console except XBone, anyway.
Thats.. not what I said. We all know other systems don't require Internet to play online. Mattrick mentioned one in the video. Others have posted other consoles in this thread.
Again, if someone asked Kaz or any other Sony exec, what console someone should buy if they don't want to pay to play online, do you think the Sony execs are going to respond with a WiiU recommendation? Or are they going to say PS3? They are going to say PS3. And when they do respond with PS3, are people going to call that exec greedy or call for his job? No.