Pacquiao does. He's showed he can hang it and be successful at 147 regardless of who he is facing. However as you say it was against a shot ODLH and he has never fought a genuine threat at 147. If a Pacquiao-Mayweather fight gets made I think it would only be fair to make it for 144/145 pounds. Marquez on the otherhand does not belong there at all. But even at 140 or 135 Mayweather still smashes Marquez in the same way like he did on Saturday.