An anal orgasm is just different and does feel sublime. Hard to explain it, though. I think the article has some basis in fact. If a woman can orgasm with anal sex, maybe it's just easier for her to let go during regular intercourse and orgasm as well.
Now what about the few of us who can orgasm at the drop of a hat with penetration but have a hard time orgasming with oral sex? Is there a theory for THAT?
Hugs,
Elisabeth