thats not absolutly true.
the dps, min attack, max attack, and attack speed are all calculated with the base item's stats and the attributes on the weapon.
let me show you, lets take the legendary bow long shot http://us.battle.net/d3/en/artisan/blacksmith/recipe/longshot
it's base item is the recurve bowhttp://us.battle.net/d3/en/item/recurve-bow
the recurve bow's minimum damage is 6-7, long shot adds 1-2 min damage so they average it to 7-8
maximum damage is 35-37, longshot adds 2-3 max damage so they average it to 37-38
recurve bow attack speed is 1.4 (all bows are based this attack speed) Longshot adds 8-9% attack speed which is why its 1.51-1.52.
primary stats on the weapon is not taken into consideration in the DPS on the weapon because they dont know what class is wielding the weapon thus the value would always be 0, if there is no crit chance on the weapon, then it has 0 crit chance thus crit damage isnt applied
so yea, dont go by the dps on the weapon because it doesnt tell the whole story, it gives a small summary. you can use it to judge if one is fair superior than the other, but if they are fairly close you need to look at the stats it's providing and what is better.