compression or flow?

Here's a 537 hp W2 360 same pistons similar duration cam with more lift on 108 lsa plus 1.6 rockers.

https://www.motortrend.com/how-to/mopp-0408-w2-offset-rocker-heads-configuration/
IIRC, the OP doesn’t have;

An Indy intake
1/6 rockers

Also the cam is a solid not like his HFT.
.578/.586 lift is a big difference as well as the intake.

Somehow I knew you would show up with a rag article…..
You’re not comparing apples to apples.
Please don’t go with “I was just showing it’s possible to….”