Cause Sony isn't afraid to publish niche, Eastern developed titles in NA like the Ni No Kuni and Atelier series'.
Since Microsoft has only been able to sell like 5 Xbox 360s in Japan no matter how many waifus they including in their marketing they're all butthurt. They can't nor wont cater to people like me.
tl;dr
Microsoft - Dude-bros
Nintendo - Kids and moms
Sony - Weeaboos
Well that doesn't make them any worse. For me that's ideal, I don't care about most japanese games and lots of other people feel the same way. Seems kinda stupid to talk trash about a console because it doesn't carry the niche games you enjoy. That'd be like if I was trash talking consoles because of the lack of RTS/strategy games. I just accept that they aren't that popular on that platform.