I honestly don't have a clear answer on this, because I don't know if I felt that I was threatened specifically because of my gender, really.
Of course I've been nervous about walking around alone at night with a bunch of strangers around me, but I'd say that it's mostly due to the intense fear mongering that has been tossed at me throughout my life, and because I don't really like people. Like every wannabe badass I do imagine myself beating the living sh*t out of any f*cker who would actually dare to try and rob or assault me, but I'm rather tiny, about 164 cm and 48-50-ish kilos, so I probably couldn't punch all of their teeth out. Maybe just like ten or so, but I haven't been in a situation where I had to defend myself from either stranger or people I know, so maybe I would.
Getting back on topic, no, I wouldn't say I ever felt genuinely threatened or anything solely because of my gender, or really at all. I know people who've been through some shit, both male and female, and maybe I'm just lucky to've not experienced it.
But I honestly don't see the point to fear mongering the risks of having a certain set of genitals, there will always be lunatics out there who do insane, horrible acts, and there really isn't a lot we can do to prevent them from doing it. What we can do is focus on supporting anyone who's been/is being abused, regardless of their private parts, without being mocking or not taking them seriously. That's not to say that we shouldn't do our best to prevent assault to happen in the first place, but I don't think persecuting people who may or may not do horrid things should have the higher priority over helping the people who've already been through said horrid things, if that makes any sense.