Jack I think you got that dsylexia thing going on,
I assume you meant 13. to 1 needs more octane than 9.5 to 1 C.R.?
Hmmmm,,,, burns slower, IE "more controlled"? That is my take on higher octane fuels in general, a more controlled burn (slower?) thus NOT as sensitive to detonation as a lower octane fuel would be. Another way to say it, "Harder to light off" a higher octane? How that equals "more power" baffles me!
Why not "tell people" if your running AV gas (and were not)? Is it illegal or something?