Thank you for the reply but I was referring to the attached image: on page 14 on the pdf or 21 in the book. I was unsure of the clarity of the stated rules for number of units. Because I have trouble seeing how a reduced number of units increases the game time.
To clarify, "larger game" means more players on a larger board. On the next page, Slaughter and Brawl are both listed as 4 players and 10x10, as opposed to Duel which is 2 players and 8x8. Maleghast doesn't really have rules for scaling up to a longer game, at least not yet.