I hope that BiS follows Valve and others by looking to migrate to Linux, too
That said, Ouya and similar systems may not necessarily have the throughput and a suitable architecture to run the ARMA II or III engine - these devices are made for very different workloads. It could be difficult to adapt ARMA II to such devices because of these differences, especially AI and rendering. Another issue is the user interface - it would need a LOT of work to adapt the UI to something comfortable to use on a console, or even a tablet or phone.
Technologically, I think it's possible. But is there really such a big milsim market on consoles, phones and tablets? I doubt it. Maybe we should just all look for a Linux Desktop port. This would increase portability to pretty much any x86 system without having to look at adapting to ARM or console.