Weapon's attack speed questions.

I've been trying to apply these tables to other classes, but it falls apart quickly with the huge variety of skill speeds available. I have people claiming that crossbows shoot slower than bows without booster. May I ask how you calculate these numbers?

As stereo said, I'm marking from the same point in the attack every time, and test it out some times to checkout that the speed is correct. Frapping at 100 fps.

Also, this is for warrior only, so I myself can't guarantee that these speeds are the same for magicians, archers, thieves and pirates. Though, I've got confirmations from shadowers, night lords and bowmen that the speeds seems to be the same for each class.