He does has a big cock, can perform for a long time. Several have confirmed this but the thing is, he really doesn't have the desire to even try.
Desire is the root of all things, no desire, nothing happens. He'll prolly fail at being a porn star, being late, doing shit wrong, etc. And then, with women, many don't know what "Big" is, they over estimate things, and then if it's Asian women he is dealing with--well you know the deal.
Basically, like anything else, it seems he has no desire period to do Jack shit, don't matter if you have a big cock or last long, if you are gonna lay on your ass with no gumption, nothing will come to you.