The whole point, from my perspective anyway, was that a minimal performing bow, shooting a very light arrow, with a primitive point, did the job.
Yes, the deer was already dead. It's chest cavity had been packed with ice until just before the tests (the vital organs were left inside the chest cavity). I'm no scientist or doctor, but common sense tells me that this would make penetration even more difficult--the meat was stiff (rigor mortis) and cold (the test was a couple days after the deer was killed, and had been packed with ice since).
My point was for the folks worrying about not being able to afford the "best" equipment (using that term lightly, as I don't believe you always get more when you pay more), and/or not being able to pull enough weight to get X-amount of KE, momentum, etc.--you can do just fine with most any reasonable set-up, as long as you do your part.
There's no substitute for an accurate shot with tuned equipment (although in the test he did get good penetration from one arrow that wasn't flying all that great). If you want to spend 10 grand on a bow and a dozen hunting arrows, more power to you (please consider me when you write out your will)--but for the big majority of bowhunters who will never get to hunt anything bigger than a deer, the "latest and greatest" isn't a requirement to get the job done, and get it done right. I don't remember who gets the credit for these simple words of wisdom--"dead is dead".
I'm not knocking more expensive equipment--just the idea that you have to spend a small fortune to be able to hunt. Several years ago, that was how I felt. Back when I was a newlywed and just getting into the sport, I felt like my equipment was inadequate because I couldn't afford "the best". Took me a few years (and more dollars than I care to count up) to realize how wrong I was--just trying to help out anyone who might be in the same boat as I was.
Chad