Yeah the Xbox would do just fine, but as you've seen in this thread and a lot of places elsewhere, a big selling point for the PS4 is that Japanese games are predominantly there. There's a solid market for Japanese games, and the Xbox is nowhere to be seen. Xbox having no Japanese games might be just fine for you since you don't play them or whatever, but what about all the people that are interested in them? They're screwed on the Xbox because there's nothing there for them.
Also, as an aside, and I don't want to derail the thread, but.. How can you say that you dislike 'Japanese' games? It's not like every game made in Japan falls under a certain genre and set of tropes. You have everything from your niche JRPGs to your Final Fantasies to your Zeldas and Dark Souls to your Sonics and Marios. 'Japanese' games are a huge variety of genres, gameplay styles and art styles, so to dismiss them all with "I don't like Japanese games" seems odd to me.