24 hour checkin (always-online DRM) and restricting game resale/trade is huge. The former has been adequately demonstrated by PR catastrophes like Sim City 2013 and Diablo 3, the latter is also very important to a lot of people who still buy discs.

We'll have to wait and see how this translates into sales, but Sony won a lot of points for not caving to publishers on these issues.

I suspect a lot of gamers also aren't keen on the Kinect, so the extra $100 for it is another downside.