I think that certain club soldiers should be definitely more powerful, because according to what I've read on the subject, it wasn't so much a lack of weapons technology or resources for club warriors, but in many cases an actual natural preference for the advantages of the weapon, for example, the Eastern Romans recognized its potential and used Germanic club warriors against various Sassanid Cataphracts to stunning effect, though this was much later on than the period in EB, this ancient weapons potential would not have changed.

Also the Germans seem to lack berserker elites wearing wolf hoods or bear hoods which were actually pretty common believe it or not.