They left out the axis on the "message reply rate" diagram as a teaser for the next blog post. I just copy and pasted the image onto the axis. It shows that white and native American males are more likely to get responses than the other races. http://www.codexon.com/temp/mrr.png And I wrote a small analysis here if you can be bothered to take a look. http://www.codexon.com/posts/okcupid-dating-statistics-shows...
Your results look depressingly plausible, though, so I'm guessing not.