In a nutshell, the valve timing requirements are different when your pounding air in the engine at two or three atmospheres. It is not as important to open the intake valve early and the exhaust can be left closed a little bit longer. Valve overlap will run rough and waste fuel and air out the exhaust until the engine is wound up enough to overcome it. There are several blower cams on the market that open the intake at or after TDC. You don’t find that characteristic in NA cams. So any old cam doesn’t make a blower cam.
Lots of websites with lots of advertisers that agree with you but there is a lot more to it.
Does opening the intake valve earlier prevent a blower car from making power? Or will it make more power if you increase the duration that the intake valve is open?
All else being equal, I won't disagree that you will have more lope with the average N/A cam and you will make more boost with a blower cam but is boost a measure of airflow or resistance?
If an engine is making less boost, does that mean it is making less power or is it less able to consume all the air in the intake tract?
Would you rather make 600hp with 14 lbs of boost or with 12 lbs?