Agreed.  Just as much (actually more so) as women feel a stigma about reporting abuse/assaults, men feel that stigma as well.  In addition to the shame and embarrassment, men are still expected to "man up" and tough it out, and many feel that admitting to being a victim makes them less of a man.  Stats are skewed as a result and not enough focus is put on finding out how far the matter actually goes, let alone fixing it.