100% Critical Chance is not 100% Chance
I was screwing around with Master Yi in custom game seeing how fast he could kill Baron and found that even with 100% crit chance I wasn't getting a crit every hit. To confirm the chance, I had two Phantom Dancers, an Infinity Edge, and a Youmuu's Ghostblade (35+35+20+15=105). If this is the case for any champion, then there's no point of getting 100% chance, not that many people would in ranked or normals. Though, this hurts Tryndamere and Yasuo a bit doesn't it?