'A' is for 'Altdorf'... learn about the many provinces of the Empire!
I think the fluffy aspect of halberds is drawn more from RL examples, as halberds tended to be used amongst pike units. The main problem is the game rules probably don't accurately reflect how the weapons would be used in real life, so you end up with this disconnect between what the fluff is trying to do and what players are willing to use to win.