Those tribals in the trailer appear to be packing quite a lot of heat.
Since Josh has confimed a new caliber, .45 Auto, for the new weapons, my speculation of the damage of the new pistol (and thereby new smg) has been solidified a bit. I expect the pistol to come in around 30-32 DAM with the SMG around 26-28. Since those, as well as hunting shotguns, seem to be the main slug throwers the tribals are armed with, I'd say that your comment is right on the money. For a bunch of feathered up tribals, they certainly are packing a lot of heat.
-Gunny out.