I suppose it'd help to know how attractive Jaz is, and how attractive the guy that approached him was.

If the average guy can approacha 10/10 gay guy and use that line with success, then I would never have joined these forums. There are some gay people that I could easily get into bed by simply asking them, it's just they're not that high on the attractiveness scale. Likewise, I'm sure whatever girls that line would work on (albeit few) would most likely also be unattractive.