Actually, the speed of a weapon has no affect on how much of an increase you will get on double attack. Either you will double-attack for less damage at a faster delay, or you double-attack for more damage at a slower delay.
As for riposte, while it is true you will riposte an equal number of times during a given fight, whether you have a fast or slow weapon, riposte never counts towards a significant amount of damage output.
Bottom line is a 10/20 weapon will *always* do more damage than a 20/40 weapon because of strength and level bonus. The sole reason 20+ paladins have better damage output with 2hs is because, generally, 2-hand pally/sk weapons are better than 1-hand pally/sk weapons. If pallies and SKs could dual-wield, they would.




