When your head has this on it, it has this in it. Countless hours of testing, research, development, dyno testing, track testing, and 54 years of port designing. Other forms of understanding the 4 strokes of a complete engine cycle.
What happens inside of an engine at 10,000 RPM? 10,000 RPM sounds relatively moderate for a race engine. Yet at 10,000 RPM your valves open and close 83 times per second. Not much time for your intake and exhaust ports to fill and empty your cylinder (about .01 of a second to be exact).
Research testing cost us more than a million. So when your head wears this badge, it is worth a million.