He is right, this is a marathon, and PS4 will probably win arriving 1 year before the other competitors...
I think PS4 will dominate for a combination of factors. First of all it's Playstation, so it's gonna sell a lot more than a Microsoft console in Europe, Japan and the Other territories. But this time around, unlike PS3, PS4 was released at the same time as Xbone, and Sony didn't give MS the head start of 1 full year in NA and Japan, and 16 months in Europe! Also PS3 was so much more expensive than a 360 which already had a very solid line up since PS3 launched and also in 2008, where 360 was showing more games, better multiplatform games, and so damn cheaper. It was a better value than PS3 before 2009, when Sony had to 're-invent' PS3 with the cheaper Slim Model, and more and more available games and also better multiplatform ports compared to initial ones. This time around, Sony did all perfect with PS4, releasing it at the same time as One, no head start for MS, more powerful and friendly to develop for = better multiplatform games all along the whole generation, and you know how much the word of mouth is contagious; also better FPS like Call of Duty, Battlefield, Destiny, just to start with. This time around PS4 is so much cheaper than PS3 at Launch, giving the possibility to everybody to buy a PS4, unlike PS3 which was insanely expensive VS the insanely good and cheap 360, with so many more games available. Sony got stronger with PS4, MS got so much weaker with One, add the loyalty for Sony brand from all the Planet apart from NA and UK, and you have PS4 'domination'. Easy as that.
I would add that Sony have better 1st party developers, and they put more effort in developing new IPs, fresh concepts and ideas, more variety, and this helped to have many many players's loyalty.