Exactly. Such a car( a stocker) is cam and head limited, it’s a stocker..but they have the suspension, convertor, gearing, etc, etc so scienced out that what they can legally get the car to do exceeds what the horsepower limited motor can do.
In other words, they get WAY more out of the combination than 99% of bracket racers would get out of the same kinda deal.
That is why such guys often get great ET and 60 foot for what they have, but the mph( power) is down from what most would expect for that ET to see.