We're getting off topic, but the OP doesn't seem to be back to add more information, so what the heck.
I think the statistics on assault are skewed for several reasons. One, as noted above, men don't want to admit they got whooped by a woman. But, I think the cases where that happens are pretty rare, unless it's either a real wimp versus SuperB!tch, or he absolutely refuses to fight back against a woman no matter how badly she's beating him.
Personal experience has taught me that a female (sometimes a woman, but never a lady), is far more likely to initiate aggressive physical contact.
At that point, the male counterpart has choices: defend himself passively; defend himself actively; leave. All of those choices carry the risk of being accused as an abuser. Unless she's skilled in physical altercations, the average woman versus the average man using passive defense will have little effect, other than scratches or bites. If he decides he's had enough of being scratched and slapped and bitten and actively defends himself, odds are the average man against the average woman can either strike, push, or throw her down with great effect.
And that's when the po-po show up, to find her curled up in a puddle of tears screaming "HE HIT ME!"
The only defense, of course, is pro-active planning: only have dealings with ladies.