Attack speed vs double chance
Can someone explain, why double chance is capped at 20% and attack speech at 40%? If I double 20% of the attacks per minute, I get a 20% increase in damage per minute. For attack speed the same holds: if I attack 40% more often per minute, I get a 40% increase in damage per minute. So is attack speed really twice as good as double chance, or am I missing something?