I can't quantify it but I can see it for myself. Years ago when Steel Force was 1st coming out, the owner came to the shop I worked at. He took a pc a of cowhide and pushed down on various Broadheads and same arrow. This was in days of aluminum arrows. Most of us shot something like a Easton 2117 or a 2216. You could watch the arrow bend until it punched through. The SF 2 blade didn't bend the arrow. . Cut the hide like a hot blade through butter. Their 4 blade almost the same results, the Trokar 3 blade Muzzy and the Thunderhead were almost a tie for 3rd but definitely had to bend a little bit before punching through, the 3 blade Rocky Mountain with a cone tip bent quite a bit and lastly the over the top expandable brought up the rear. That thing bent so much I thought is was going to be permanent. Big Hole though! Don't remember the brand. Rage was even around then. Anyway, I bought the SF on the spot and had excellent results for several years . For various reasons, I got away from them and tried a variety of BH's. Including over the top expandables. The results varied from good to poor. The poor results led me to do some research which led to Ashby. His research led me back to what I already knew. Heavier arrows and True COC BH's penetrate better. I should've never changed. I've had excellent result for 10 years 2 blade Helix's. This year I'm going to give their new 4 blade a try. I expect good results.