Of -reported- incedents, 1 in 4 women report having been the victim of significant physical harm by an intimate partner, as do 1 in 7 men. Now if you consider the comparative likelihood of severe physical harm in M vs F and F vs M, and factor in the likelihood of reporting for women vs men, I think you can see that the rate is not at all what it seems at first glance.
(FWIW, despite the relative -frequency- of incidents , I do agree that the danger is greater to women just on the basis of the likelihood of harm in a MvF conflict.)
Reported incidence of psychological/emotional abuse are almost exactly at parity, with just under half of both sexes reporting abuse in their lifetime. Physical abuse prevalence in lesbian relationships is also much higher than either heterosexual or male-male relationships.
From this I would estimate that the willingness to act out in violence against a domestic partner is something close to evenly distributed among the sexes.
Collection of definitive data about subjects such as this is notoriously difficult, but reading between the lines both here and in violence among youth (m-m, f-f, m/f) seems to indicate that the predilection, if not the severity, of violence is relatively evenly distributed among.