I took the liberty of looking at your rune page, and I see the problem. You bought crit runes, however you did not buy critical strike CHANCE runes, you bought critical strike DAMAGE. The difference between the two is critical strike chance runes, of course, increase your chances of getting a crit; critical strike damage runes don't increase your crit chance, but instead increase the damage you deal when you do critically strike, similar to what Infinity Edge does.
So, rather than increasing your crit chance to 13%, those runes you have are increasing your crit damage from what is normally 200% to 213%.