Talk:List of runes/@comment-1395363-20111222195959/@comment-62.163.167.91-20111225222712

I think the main argument is that early game Crit dmg runes do next to nothing for your dmg output and arPen does. Also it's only viable for very few champs (mostly those that have build-in crit chance, like trynd and ashe). Do note though that even they have to rely on luck early on to land crits. Sure ashe's notorious first hit crit, but after that she needs a lot of time to build up enough crit chance again, which won't happen if you're farming like you should and trynd pretty much has the same issue (and add to that that trynd's early game isn't that good before lvl 6).

Anyway, I always like to try stuff myself and see if it works or not. If I were you and I had the IP to spend I'd try it out just for the fun of it. Heck you could even take a whole rune page full of crit dmg and get +300% crit dmg with infinity + runes + masteries. If it works though remains a second question... Also realize most games are actually won early game and not late game.