This question has been settled with a final result: "Sony Playstation 4". Trading has finished.
Microsoft and Sony announced that their next console generation will be launched almost concurrently: Xbox One (XO) on Friday, November 22 in the UK and 13 more countries. PlayStation 4 (PS4) will launch one week earlier than that in North America and one week later in Europe. [1]
The two consoles' differences are as follows - for their impact on the forecast see in the "Discussion" section below: