So... exactly why did women come under significantly more harassment than men during the GamerGate debacle, as evidenced by various newspapers during the event?

So... exactly why did women come under significantly more harassment than men during the GamerGate debacle, as evidenced by various newspapers during the event? Nathan Grayson, the person who was meant to have committed the ethical violation of writing about someone he had slept with, received a fraction of the harassment that the woman he had slept with did. And of course none of that has anything to do with free speech issues - but it’s verifiably the start of when the #GamerGate hashtag was used. So somehow the movement supposedly entirely swivelled from ethics in video game journalism to being pro free speech at some undefined point, while its targets shared a common characteristic?