Much possibily no?
Lifetime is sure (PS4 not will have less than 50% of market, accept this), but for me even by 1 Jenuary 2015, Globally the PS4 will be more than all XBOX ONE and Wii U!
I predict 10,500,000 Wii U and 8,000,000 XBOX ONE by end of year...
10,5m+8m= 18,5m < PS4
What do you think?