It’s a great driver. I could see how you’d see such a big gain coming from a driver as old as the Nike Vapor. For me coming from a driver only a few years old I didn’t see as big of a difference that justified the hefty price tag.
The things you didn’t touch on was FEEL & COMFORT. Everyone loves to say to get fit but these are things that are immeasurable by a professional club fitter. I’ll take that over faster ball speed any day of the week.