Is American idol encore good at judging your singing

I have the game American idol encore 2. It really isn't horrible but it's not as good as sing star on play station. if you go on hard and expert you actually have to try other wise you can pretty much just talk into the mic. and they will praise you. I was expecting more so if you have a play station I would get the Sing star games. The Wii which is what i have doesn't really have any significantly good singing games I think that it would be better to just wait for a better game to come out.