Race gas vs pump gas on lower compression street/strip motor

Back a few years ago we did R & D on a restricted sb chevy on the dyno at 10-1 compression on vp 110 and 93.3 pump gas back to back. pump gas made 6 more hp than vp. We tuned for the best pull with each. Not earth shattering but in a restricted engine every bit counts. Yeah I know...it was a chevy...results are results.