I’m not much into dyno numbers.

I have run into that before. Sometimes they just want it broke in and don't even want a dyno sheet. They just want to know that the motor is ok and not leaking oil. Not how I would do it but for them it might make sense.
Some customers don't know how to properly set timing, adjust valves or tune a carburetor so they hire someone who does. I encourage customers to watch their motor be dynoed. Some will use this as a learning opportunity but some don't care to learn they just want to enjoy the benefits well tuned motor in their car. Nothing wrong with that either.

Some of the motors I dyno will never see a racetrack. Most will never see a dragstrip. Most of the motors I do are for the circletrack. They are not interested in a time slip from a dragstrip but still want the motor to perform to it's full potential.
But they still have a "proving ground". You're splittin hairs.