tabouleh, I think I've already mentioned why classing other abusive behaviours as violence can make things more complicated. It's not to say that the other abusive behaviours are acceptable, but it does make it confusing when we start talking about stopping child contact because of DV.
You're right in that men tend to be stronger than women. I'm twice the size of my ex but that didn't stop her physically attacking me on several occasions. And, yes, the cuts and bruises those attacks left weren't (thankfully) broken bones. But then I have read, and believe to be true, that the real legacy of DV is less the physical scars but the emotional ones.
Also, by concentrating simply on violent acts you have demonstrated the issue with classing all kinds of domestic abuse as DV. Physical violence is only one type of domestic abuse. I take your point about the relationships section here being a sad litany of male-on-female domestic abuse. But take note of how many other threads there are of MN members having serious problems with their mothers, MILs, sisters, SILs etc. Many of those show clear signs of emotional abuse by said mothers, MILs etc. Do you think those abusive women treat the men in their lives any better?
Nevertheless, I'm uncomfortable with any suggestion that some kinds of domestic abuse / violence are better or more acceptable than others. As Women's Aid itself says, all domestic violence is unacceptable.
"I would want to see men setting up "Men's Aid" to help all these poor defenseless men who are at their wits end, in fear of their sanity and lives due to their wives abuse of them - it won't happen because it is just not a major issue."
It has happened because it is an issue. ManKind and Men's Advice Line are two organisations that perform the same role as Women's Aid and there are others. And there are also a (admittedly very few) men's refuges.