User blog comment:Willbachbakal/(Item Concept) A New Kind of Crit/@comment-24795478-20150702184534/@comment-9692814-20150703024025

Because in Dota there are ways to play around physical damage other than stacking armor and health. There is evasion, blinds, disarms, and ghost form (ethereal form) which all make autoattackers have a tough life. On top of this, most carries in dota build survivability early rather than crit and critt chance does not stack like in league. The hero with 4.5X crit only has a 15% chance and can never have a higher chance to crit