I have to say, as an owner of a new PS4, I sat down with my first current-gen machine (don't own an Xbox One or Wii U), and thought "oh... seems to be missing the bells and whistles I keep hearing about that adorn the Xbox One". I then wondered to myself why the PS4 was so successful in the first place seen as the other two consoles have just-as-if-not-more compelling exclusives (save for Bloodborne, my new baby).
So I'm kind of up in the air when it comes to the success of the PS4, which really just feels like an extension of the Xbox 360 in all honesty. I think Nintendo and Microsoft have innovated more than Sony, and that Sony are just riding a wave of good will.
That said, I DO love the PS4 (I love all consoles!) but yeah, the rapid success is a bit puzzling to me, unlike say the Wii, which had a reason to be so wildly successful.