[SG] Luring players

In a couple of months I'll have the opportunity to run a SG scenario
for a bunch of Squad Leader players, and it occurred to me that we
ought to have a scenario that will be familiar to them, but will show
off SG.  (We could do the same thing for Warhamster but since I don't
think I've even seen Warhammer being played, I can't help much).

And this brought to mind the second question.  ASL is more complex
than SG--but the introductory "Guards Counterattack" has a couple of
companies per side.  In SG, that would be an all day event.  Aside
from the difference of moving 1 counter vs moving 10 minis, what makes
it possible to play that scenario in a few hours in ASL when you can't