User blog comment:Deshiba/Are you Critting me !?/@comment-4794115-20130519073158

Crit isn't considered lucky because it's not like dodge. With dodge, you had to stack runes, items and champion passives to get a chance at like 40%. With crit, you can get to 100% with two or three items.

You can get a PD and know you'll be critting about 1/3 of the time. even if it's not 1, 2, crit. 1, 2, crit. You can doing 100 AAs and know you'll crit about 30% of the time.

Two pd's and you have 60%.

Since crit can be easily stacked to 100%, it's not considered strictly a luck based stat.