Sony 1st party isn't that greatly diverse either. It's mostly shooters with few exceptions. 3rd party wise they are the most diverse out there for consoles. MS not very diverse either way 1st or 3rd party. It's mostly samey. Nintendo has the most diverse 1st party. 3rd party wise not so much. MS is the weakest of the 3 as they don't offer that much in comparison to the other 2. This E3 was another year they were just boring. Forza and a lot of the same stuff we see every year.
Meh that's opinon, just like they don't offer much in comparison to the other 2. Like for me I've played more hours of halo 5 than I did in total of all my wii u games, Nintendo got smash and mario kart going for me and that's about all. And when it comes to 3rd party MS and Sony are the same unless you like japanese developed games which I don't know many people that do just me and my friend really lol.