the DPS of the weapon would probably be against a 0 armor enemy. Every hit has an amount of damage removed by armor. If you have a 50 damage wand attacking a 45 armor enemy 2 times a second, you're only getting 10 damage a second in. Compare that against a 100 damage wand against a 45 armor enemy, 1 shot a second. You're doing 55 damage a second.

This is why you almost never see a dagger or stiletto. You can get 300-400dps really quick, but very little actually passes through armor. Blizzard sticks are just like daggers, with a freeze proc added.