I think it's safe to say that Samsuing has become synonymous with Android. But when the general public go out and buy a Galaxy device, are they buying the brand or are they buying Android? I ask because I believe the answer to that question will determine if Tizen is a success or not. My guess is, they're buying the brand. And I'm betting Tizen UI will look very similar to whatever Touchwiz looks like at the time of release. This way the general public doesn't know the difference.