The issue I saw in reviews wasn't with power either but with input delay making games really not playable. Even the navigation in the basic interface had some "lag" which looks really unpleasant.
It was tested on one of the early adopters OUYA which apparently had issues. During the first seconds of the review, one of the buttons of one of the controllers even stood pushed down and required the player to "shake it up" to go back to normal.
I'm OK with the idea that it can be improved, aware that it's not to be compared with a xbox, psX or whatever other living room console and that in the long run it may become a viable "low cost" console.
There was just some bad "publicity" with the first units shipped that had factory issue (so the bad reviews were deserved in that case contrary to what Blunty seems to say) and I've read on Ouya's forums about people having some issues with ouya's support service when contacting them to have the controllers replaced and not hearing back from them .
It makes for a blurry information over the net about the current state of the console IMO.
Some people say it's not playable at all, and some other say it's fine and depends on the games.
The fact that C2/CocoonJS is getting support for it is a nice opportunity anyway (one more platform, yeah).
Now on the consumer side, I'm wondering what audience really bought the console so far (from what I had gathered during the kickstarter campain it was mostly developers) and if this audience has a good enough experience to be willing to buy the games produced.
I guess it's too early to say, but that will be part of the interesting informations/datas to look into.