Note his left-hand fist has some kind of tube coming out of the back that "normal" augmentic fists don't. Similar tubes are present on both fists for the fourth images ("Slave Ogryn with Arc Welders"). So apparently they are different.Alternatively, they are as good at labeling those weapons as the Corpsegrinder Cult's ones.
'cause this guy obviously has 2 Augmentic fists.
I'm counting only four different weapons:
Looks like 6 different heads, including two "lobo" variants. Clearly only 2 different bodies with added gubbins to make 'em look more different. So I'd again say two Ogryns per sprue, and assuming two sprues per box.
Loving the Ogryn head with the raised welding mask, by the way.