Really to me, the launch line-up of the console is kind of irrelevant, What Microsoft and Sony really need to do after launch is have frequent releases to sustain sales so they don't have a massive drop in sales like 3DS, WiiU and Vita did. I mean PSVita had a really strong launch line-up and then just pretty much fell off completely when it came to AAA releases for the most part.
Xbox One and PS4 don't have particularly impressive exclusive launch line-ups in general for me, Xbox One's is probably the better of the two at launch.
The real question is which will perform better in 2014 since both seem to have pretty good games in 2014 (Titanfall, Project Spark, Infamous: Second Son, The Order, DriveClub, Deep Down.
It could take until Holiday 2014 or into 2015 until PS4/XB1 really start hitting there stride with frequent exclusives etc. Just like the WiiU struggled in 2013, But is starting to pick up towards the Holiday Season and has a strong 2014.
If I had to pick a PlayStation console that had the strongest launch line-up, It would probably actually be PSVita's. PS4's full line-up is quite good, but it is just lacking in the exclusives at launch really, which is the most important part of the launch lineup.
