Viewing enemy stats in game

I recently went up against a adc who brought a bunch of lethality that wrecked by poor early game, and one of the most frustrating things was that I couldn't find how much lethality she had packed into her rune page until post game. Lethality and magic penetration, among a few others, are not displayed when you click on another champion in game, but they are still very relevant stats that can significantly affect decision making. I think it's unfair to us as their opponents that these stats be hidden. Our current reality is that we have to memorize or somehow look up the base stats of every champion, and then try to figure out exactly what rune and mastery set up they are running if we want to figure out how much lethality we are dealing with.