If people think Cesaro was put with Heyman because he can't talk, they should listen to some of his interviews and promos.
And again, with his skill set and strength all it takes is some impressive matches with unquestionable displays of strength for him to be seen as a legitimate threat against anyone.
Who foresaw Mark Henry's House of Pain? Who cared about all the embarrassing defeats Mark had had before that once it got rolling?
When Cesaro giant swings Brock, or tosses him up into the air for the uppercut, no one is going to be saying 'but he lost to RVD, there is no way I can believe he can beat Brock'.