There was a great blog post[0] recently regarding the recent Aziz Ansari story about sexual harassement. (If you haven't heard of this case, I encourage you to Google it.)
It made a really great point that I believe -whichever side (if any) you take in the Ansari story- is very enlightening (at least it was for me), and that potentially applies to your study.
I can't possibly explain it as well as the author, so please go read the article, but, in essence, the author explains that women have been conditioned from the beginning of time to endure pain and as such don't report it as much.
The study you linked to, is based on reports of men and women, and indeed, according to this study, men are more likely to experience online harassement.
But now, is it because men report it more because they are more sensitive than women to online harassement, or are they really more likely to be harassed online?
When I ask myself, "have I ever been harassed online?", I can definitely say "absolutely never".
This is of course only my personal experience, but I'm eager to believe the exact opposite the study you linked to concludes: women are definitely more likely to experience online harassement, and OP's article is one demonstration of it.
[0] http://theweek.com/articles/749978/female-price-male-pleasur...