I wouldn't even call it backwards compatible. The now model Xbox is basically gonna be like a new graphics card generation. The older graphics cards still run new games but after a few years they won't be able to run new games anymore.Backwards compatibly is consumer friendly?
Thats such a small minority these days, Xbone is gonna need exclusives beyond Halo Forza Gears.
Theres a reason they are trying to get exclusive marketing rights for certain games. DMCV, NiOh 2 etc