I just wanted to clarify a point made earlier, based on the math.
Originally Posted by DarthBaio
I feel like MrLucky13 deserves 98 more cents so he has a full dollar. What he just said is a gamebreaker in this situation. Champions with higher attack speeds don't need as much crit chance, as their ability to crit is higher than champions who don't hit as often.
This just plain isn't true. The calculations I did are even MORE accurate for high AS champions, because the more attacks you get in, the more accurate it is to talk about your "average" damage per attack, over some time period. In other words, if you only attack one time, my formulas don't make sense. Either you'll crit... or you won't. But if you attack really fast, and you get in 10 attacks, then your damage output will start to line up better with the statistical average.
If you have a fast AS champion, then yes, you are likely to get a few crits off while attacking. But that doesn't change my calculations. The question at hand is, out of your 10 attacks, is it more important to get, say, 5 crits off for 300% damage or 7 crits off for 250% damage? (assuming 50% crit, 100% dmg boost, vs. 70% crit, 50% dmg boost). The calculations still hold. (Obviously, in this example, assuming 10 attacks, the first case gives 5*100% + 5*300% = 2,000% base dmg. The second case gives 3*100% + 7*250% = 2,050% base dmg.)
I also want to clarify, please don't misconstrue my personal preferences as some kind of "you're stupid if you don't get X runes." I'm just giving you the math. What you do with it, and what is most effective depends on your build, your champion selection, your masteries, your play style, etc.
I just wanted to give you all the math
As many people have mentioned, if you play a particular hero with a certain build, that gives you > 64% crit (before applying rune boosts) in most games, then I completely agree with you. Crit damage is the way to go. And if you are more concerned about being the most powerful late-game, then crit damage is the way to go, whereas if, like me, you are more concerned about establishing yourself early/mid game, then you might prefer crit chance over crit damage. If you're playing Shaco, crit damage is hands down the way to go!
Maybe one of these days I'll look into all the calculations with attack speed, damage, etc. But that sounds pretty nasty, so don't hold your breath! LOL