TTK would be 2 bricks of C4 with no ordinance Armor, and with maxed Ordinance Armor, 3 bricks of C4. MAX units are meant to act primarily as the counter to infantry forces, assuming they are correctly supported. But having magical bricks that 1-shot MAXes that 4 classes can carry is busted. Maxig ordinance armor just means you have time to run away, because everyone who has maxed C4 have 2 in their inventory. Maxed Ordinance Armor should mean it takes atleast 2 people to kill a MAX. In the current state, C4 makes MAXes almost completely worthless unless you are running with an organized platoon.