Because Kingdom Hearts 3 and FFXV do NOTHING for me.
Sony really landed a death blow on Microsoft with that pricing though hahahaha.
It's all tastes but no matter how you look at it, Smash and 3D Mario are bigger than Kingdom Hearts and Final Fantasy. The only difference was that 3D Mario and Smash 4 were announced in advance.
Personally, when it comes to the games, Nintendo has this one in the bag just with the line up we already know, but I still don't know Sony's one.
Gran Turismo 6, Infamous: Second Son, Beyond two souls(or something like that), Killzone, AC4, and a bunch of other stuff. You can watch the Sony conference here and find out more.