I think you got a wrong perspective, well just my guess, someone can pitch in. I've watched videos, and read stuff. Basically what women say about this, is the following, to give good BJ you have to do a lot of practice. Now put that in terms of young 22 year old girl who lost her virginity at 18, been good girl and stuff, and only had an honest partner count of 2 per year, all with small d1cks. Or, we can assume, perhaps wrongfully, that HB10 doesn't give head left and right, and is not a slvt, she didn't have a lot of practice, much less with big d1cks.
I wonder how old is that girl.
But whatever, maybe she has head problems and needs a head doctor. As for the OP, if you can't manage to figure out how to fvck her right, we can help you out man, gives us the area and her phone number, someone will respond to this challenge.