I'm thick rather than super long and I have been deepthroated a couple of times while most of the women in my life have barely been able to perform oral sex on me (they just nibble at the tip which is thinner). I don't know why the young lady from Beijing could do it but she did, and I was impressed indeed! Another woman I had a longer relationship with could also do it, and I don't know what her trick was either.
In both cases (that's 2 out of more than 200) I was really, really pleased that I got good oral sex, and not at all peeved that they could take all I had. Also the deepthroating made the sex which followed so much better, and Beijing girl was part of some awesome casual sex which I remember like it happened yesterday. The other, older (mid-thirties) woman was also a great lover and we shared some great times together. Again this may have been kindled by my enthusiasm after receiving a great blow job.