Please keep in mind, that with proper skills and equip your crit damage can be more than 250% of base damage (atleast on 2H WF, but I am sure it can be achieved on ranger too). Crits in every game are all about huge scalings, it wont do much if you dont scale both parts, but when you have good base damage, increasing both crit chance and multiplier can increase your damage MUCH more than any flat stat could.