Getting back to the original question - The problem for GGG to become an American "star" (PPV/Las Vegas) is his opponents. There's only a couple of American "superstars" around the middle/supermiddle division. In fact you can argue that there's none at supermiddle, Ward has never got close to being a PPV/Vegas guy, a Froch fight would enhance his standing but is not PPV.

Obviously Pacquiao is not European, but he is a foreigner in America, so to make a comparison - his rise to superstardom started with Oscar (one of the biggest boxing stars ever) and backed that up by facing Hatton (PPV fighter) and Cotto (PPV fighter). And all this came on the back of already being an established great fighter with legendary fights against Barrera, Morales and Marquez. He had the Latino market onside.