Hey, I got an idea. Since you're comparing 3 different sets and the shot speed is the same, it doesn't matter what you compare it as long as it applies to the same object. How about doing test shots on a mage in pvp? 100 shots would satisfy 1) the average dmg and 2) the real time critical rate... Testing the defense is trickier though; I'm assuming you're not a dexchantress and you can't heal... However, the same concept works backwards as well. You could do a statistical analysis of the mean difference between the 3 sets. If you're interested, I'd be more then happy to help, being a lvl 47 dexchantress.

-kobebean