Nintendo:
- Strongest division lies in handhelds
- Target demographic aimed at a younger audience
- Wii U Architecture built around the cooperation of a gamepad
- Relies on 1st-party
SCEI:
- Strongest divison in home consoles
- Target demographic transcends age and aims for the entire market
- Core gaming experience
- Strong multiplatform support
MCSFT:
- Identical Architecture to PS4
- Target demographic transcends age and aims for entire market
- Core gaming experience
- Strong multiplatform support
Should be obvious. Sony & Micro both have consoles that use a standard controller, both offer close to the same network features, both have roughly the same price of entry and neither has any sort of accessory that it can't function without. Nintendo can sell as many units as they want and I don't think it will bite into Sonys bottom line. The only "competition" they have is that other team offering the same package with few defining features (PSNow, Snap, SharePlay, Cable TV Input) etc.