Yours is a question that comes up fairly often. There is no cut and dried answer about whether dual or single cams are better, but there certainly are differences.
The draw characteristics is not one of them. How a bow feels during the draw (draw cycle) has nothing to do with whether the bow has one cam, dual cams, or however many cams. It is determined by the design and shape of the cams and modules.
The same can be said about how the bow feels as it drops into the valley or against a draw stop, however this is usually a matter of the shape of the module.
The same can be said about the difference in speed. It has nothing to do with the number of cams on the bow. Just the design of the cams and modules. The more aggressive the cam/module design the more the archery has to work to draw the bow. The more work involved the more energy that is stored into the bow. This translates into more speed.
As to which design is better? This is something that's been beaten to death on many forums. I honestly believe that most young shooters who have grown up during the single cam era would choose such. Then there are those like me, who have been shooting for 35 years or more and shot both types extensively, that are not quite as biased, and see virtues in both.
Me, I'll take a dual cam bow any day simply because they're more tunable. You can just do more with them when playing around.
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