@engineer,
Main difference is the cost to enter the market, for developers.
Which aren't necessarily the AAA pretty pixel $1 billion budget $60 to buy console games. You still will want a console for those.
But the ouya is more powerful than the majority of mobiles currently out there. It's not the fastest mobile technology, but it's 2x as powerful as many 4g devices. (my samsung phone and kindle fire both have 512mb, yet play 3d games)
The big thing though, for developers, is the console makers charge 1/3 of what you make, on top of all the other costs to make/market your game. You may have other licensing costs for a game engine on top of that.
Already large developers are starting to shift towards mobile games, having a meatier hardware that they can target without the huge licensing fee's will only encourage it.
I'm making android games and would love to see them on the TV. Since I'm targeting devices with 512mb as my baseline, it should only run better on the ouya.