That is the purpose of a dyno! I do it everyday on my Dynojet Dyno! Just keep in mind that a dyno printout is at WOT where none of us spend most of our time on the street in a 6000 lb truck. Peak numbers are nice but area under the curve is important as well as throttle positions other than 100% WOT. Again, there is a theoretical limit on stock motor no matter how good the tune. It's not like every revision is going to give another 10 RWHP over the previous version. You would never feel a 10 hp difference on a 6000lb truck anyway. Not even on a 3500lb car. Now 10 hp gain on a motorcycle will get your attention! These trucks have been around long enough now that parameters and tunes should be figured out. When I send out a bike dyno tuned it is spot on and requires no revisions unless there are other modifications done after my tune.
I have this conversation with our customers every day, well said. Driving characteristics such as shift points, throttle commands, etc. are more important than a few peak HP especially on a tank that is the Raptor! Combinations are how mail order tunes are built and based for the customer to ensure what they are getting is correct and performs as advertised. Go making changes to those combinations and you have to change the tuning. Luckily there are very few modifications (ie. Tune, Cold Air, Exhaust, or Supercharger) that are available for these trucks so as a tuner it makes our job a little easier. Compared to the Mustang Market which has a million different parts available and variations of each part from different brands or outfits.