In playing a few more games of AS, I noticed that what slows play more is the number of players, rather than the number of figs. Believe it or not.
At our store, we tend to play mini games as multi-player events and we had five players running a company vs. company game. It lasted about four hours and that was a bit long. Previous games of that size had half that number of players took about 3 hours, sometimes less if we used lance activation.