Ok, seriously... If you command 16 and the car runs 10 degrees because of knock, you are saying that is better? Just curious, does the knock somehow lower the EGT temps? Pieces of pistons flying through your engine are probably fine though...Its amazing how lightly some people take engine knock and detonation.
Regardless of your "theory", the dyno session shows what the car actually wanted to run safely and make the most power...