Dual Weilding issue/question

I have a quick question. How is damage and crit determined when dual weilding? I have always heard that it mainly is determined by what is in your main hand then what is in your off hand. The thought was brought up to me when I was playing around tonight hitting mobs. I have a dagger in my main hand and sword in off hand, however, my crit is only showing around 498 and attack of 220 and a speed of 1.1 . When I put my sword in my main hand it shows 240 attack 548 crit, and 1.2 speed.

My sword is
151-185 atk
1.4 atk speed +19%
50 crit strike +52 + 60 from manastones

My dagger is
138-154 Atk
1.2 atk speed +19%
100 crit +52 +60 from manastones

For some reason this doesn't make sense to me because even though putting my sword in my main hand and dagger in off is displaying more atk and crit, it's outputting less damage on mobs. I've tested this for the last hour or so. Mobs I can 1 hit with dagger in main are taking a second hit when the sword is in main. I just don't get it. Am i thinking this through wrong?

 

well this server is full of bugs i don't know if this is just one more of them...

 

Anyone else have an answer or a clarification?

 

I think it is a bug. At least if I read the guides right then daggers have a base crit of 100 rather then 50 on swords... it could be that your dagger is actually flaged in the game as a sword and vice versa... only thing I can think of. But that does not really make sence because the speed and attack are about right. Your dagger/sword should hit slightly faster but weaker then sword/dagger.... in the whole it doesnt make sence so... bug.

 

Ok....I was thinking of dual swording...but if this bug is doing what it seems to, a dagger/dagger would hit harder then a sword/sword

 

it has something to do with that the dagger and it critrate pushes your crit from sword also and on the other hand the dagger gets dmg from sword it's something like that, normaly on retail sins go for dagger main sword off best dps.