Although he has appeared on Superstars, it doesn't mean that he is not getting pushed.
Over the last few weeks, he has pinned both John Cena and the WWE Champion CM Punk, so they must have a lot of faith in him.
I think at the moment, the fans haven't taken to him how the WWE would have liked them too. Also, he hasn't cut any sort of Promo that has meant anything yet.
The WWE need to try and get him over, but it takes time. At the moment, he is still viewed as the returning Albert/A-Train instead of being accepted as Lord Tensai.