Armor works vs really trash players.
3 levels ahead and a senna who lacks any damage vs high health and armor. Armor counters lethality and a champion that can only auto attack every 2 seconds while being 3 levels behind.
Come back when you are a Rammus with 400 armor and 4k health but you still die in 6 seconds to a Zed. Or when you are an 800 armor 4k health malphite who dies in less than 3 seconds to jinx and fiora.