If PS3 won Europe, i'm sure PS4 will Europe without a contest. I expect PS4 to tie with Xbox One in America at the most. It all comes down to price
Xbox One, PS4 and Switch (+ Many Retro Consoles)
'When the people are being beaten with a stick, they are not much happier if it is called the people's stick'- Mikhail Bakunin
Prediction: Switch will sell better than Wii U Lifetime Sales by Jan 1st 2018