Mathhammer - Taking Variance Into Account

A couple months ago I listened to an episode of The Best General that blew my mind and made me question how I managed my pregame and in-game expectations. Specifically, it was Episode 14, where Adam spoke with Eric Lofgren of Variance Hammer; Eric brought up that there is an inherent issue with looking purely at averages when evaluating units in Warhammer because averages rely on the law of large numbers, which overlooks the variance in our actual, on the table results.