This is in reference to Arkham City. Arkham Asylum counts to, but it had this problem to a lesser degree. At least in my experience.
My problem is that in AC, 95% of the time that Batman does the Ground Pound, he goes strait for the nether regions. And 90% of that he'll go strait for the anus, giving the thug a proctology exam that will leave him crippled for life. Think about it, Batman rams (at full speed) his entire giant fist right up the hole. What's that gonna do to someone except for leave them horribly crippled, wearing a diaper for the rest of their life. Granted, some of the thugs probably deserve it, but for a guy who claims to be all high and mighty cuz he'll never kill, he certainly seems to have some awful loose scruples about anal rape.