I'm not buying that a female "9" (on average apparently) went to a popular dating site, messaged a bunch of guys (even 9s themselves) and received no response. There's something else at play here that you aren't telling us or don't know. There are lots of possible reasons no one messaged her back:
1) She messaged only a few people (small sample size)
2) She messaged only people with older, inactive profiles
1) She messaged only a few people (small sample size)
2) She messaged only people with older, inactive profiles
3) Her information lacked a picture
4) Her profile lacked key information
5) Her picture(s) were bad
etc