I think PS4 will reach 55-60% of Marketshare : XOne is too weak in Europe, Japan and rest of the World and always will be to the end of this Gen; this is why is not possible to compare XOne to PS3 for its come back ! WiiU will do less than GameCube. My opinion.
”Every great dream begins with a dreamer. Always remember, you have within you the strength, the patience, and the passion to reach for the stars to change the world.”
Harriet Tubman.