Your reasons for the PS4 winning this generation despite being the most powerful console.

[DaAndy]

Name (Playstation - especially in europe!), Marketing and being at the right place at the right time.
Its more because of mistakes of MS and Nintendo than because of the things sony did right.
And now the stone started rolling and will not stop again.

Of course it has also a bit to do with the power - lot of people "see" huge differences between 900p and 720p or 1080p and 900p and such stuff. (lets wait for 1337p² ^^ - that should show how I think about these discussions...)

If everything was only about the currently available games (not even to say exclusives), things would look different. So i completely agree with KLXVER - "[...]but game wise its probably the weakest of the three atm..."

Being at the right place at the right time ... You don't have to be really good, your competition just has to be worse. You are not always winnig by making the most thing right, but sometimes even just by making the least things wrong ;)

And another important factor just coming to my mind - 3rd parties would never never never ever drop sony and let them down - no matter what sony does.

I don't want to say Sony did not a good job with PS4 (even though i do not own this console and probably never will do, as I am not their - and the 3rds - audience), but not as good as the sales numbers week after week after week tell the story.