Armor

When looking at vehicles they tend to have a similar amount of wounds to trooper units and generally worse armor saves, which is confusing since they are supposed to be durable war machines. The Armor keyword however makes all the difference, ensuring that the vehicle ignores all wounds it takes that aren’t critical. We know that every die has a 12.5% chance to roll a critical, or 25% chance if it also surges to critical, which means that Armor greatly reduces the amount of damage that can even affect an armored unit. However, how much work is wasted when shooting at an armored unit compared to a non armored unit?