Neither of those articles supports what you are saying. The first one, about sexual assault, says in big, bold letters that men are less likely to report sexual assault. The argument was not that more violence is committed against men (sexual assaults at the very least are obviously not), it's that men are less likely to report it when it happens, which is exactly what your article said. It also said women under-report. But just because women also under-report doesn't mean they under-report at a higher rate than men.

I'm not disputing the idea that violence against women gets underreported. I am saying that there is a lack of data here by definition and it is therefore impossible to guess how much one gender or the other is underreported relative to each other. If you want to quantify things, you need data instead of a feeling. You linking these two articles strikes me as you googling whatever you could find that parrots back a conclusion you already had in your head.

The fact that you repeat your conclusion despite not having evidence to back it up is a sign that you might be falling victim to confirmation bias. You should maybe spend a little more time examining whether or not your worldview has you jumping to conclusions in the absence of data.

I don't know and have no way of knowing which gender underreports abuse more, and the nature of underreporting makes it tough to trust any data on this topic without digging into how it gets collected.

I would posit that, generally speaking, women are generally less capable of harm that would necessitate calling the cops on your partner. Yes this is a generalization, but i think it holds true that men are generally more durable and physically stronger than women, and a lot of times a woman hitting a man is just not going to meet the threshold of that man thinking "oh, violence is being done to me, let me call the police". However if the same force she is applying were applied to herself, she may get injured or at least be more likely to perceive that force to warrant calling the authorities.

I don't know how I could prove or disprove that assertion. God knows there's plenty of anecdotal evidence out there but I'm not aware of many credible studies that talk about woman->man violence.

Not to sound like a broken record, but the statistics themselves cannot be trusted. So bringing up statistics doesn't support your argument.