Personally, I prefer the Morinu Tofu/Ouya partnership.
Taco Bell, easily.
COME ON. Taco Bell? I'm not choosing either one but I'm definitely not picking Taco Bell.
Now if one of them only had FLAMIN' HOT CHEETOS then I'd pick that HANDS DOWN.
It's simple math, my man! Doritos and Mountain Dew, or the entire menu of a restaurant. The latter has a ton more variety!
DAMMIT FOILED AGAIN!
What he said.
Also Taco Bell for lunch is really tempting now.
Clearly these folks know their demographics, though. I couldn't give two shits about MTN Dew and Doritos, but I will get hot and heavy for Taco Bell. Meanwhile I am all about the PS4 and not the Cross Bone Extra Crispy 420.
In terms of what you can actually use while playing the video games, I would go with Mountain Dew, cause everything else would get your hands messy, except I hate Mountain Dew. However, you could possibly eat messy food while playing a game with Kinect. So there's really only one possible winner here, Xbox, but it's more like the second loser.