I don't see how that would be a selling point to anyone. Both The Cave and the Kickstarter game are planned to be released on multiple platforms and The Cave can already be purchased on XBL and PSN, as well as PC, Mac, Linux and WiiU. It seems like anyone buying an Ouya will already have at least one of those platforms already and by the time Ouya hits retail, The Cave will already be months old. It really seems like too little too late.
The point is that it's not just phone games. That's why I lead off the paragraph with those words. People were worried it was going to just be that. I provided info about a developer who makes console/PC games being on board with the platform. I never said The Cave would be a system seller.