The relevant question is - does it matter? The Formula 1 pit crew is more expert than the mechanics at the Toyota dealership in ways I can't appreciate - but does it matter for my Highlander's oil change?
The answer might be "Yes, the F1 crew will do it in a way that prolongs the life of your engine" (I care about that!) or "Yes, the F1 crew will change your oil in 20% of the time" (I may or may not care about saving a few minutes every 6 months) or "No, you won't notice a difference but they are just more expert" (in which case I totally don't care!)
Part of expertise is ability to articulate its relevance to a given situation. Your customer may need help in validating your expertise, but at least start with the claim of what you can do.