Really? I thought BRR.com puts 40kg of weight on the wheel to simulate the rider's body weight? 70kg rider, 10kg bike, 80 kg total. Divide by two because the bike has two wheels. 40kg weight on each wheel. Seems like a reasonable test weight.
Which test shows resistance going up with high pressure even on a velodrome? Curious to read this test. If this is true then it would be quite incredible.
https://silca.cc/blogs/silca/part-4b...-and-impedance
BRR uses solid weight. However a human is a flabby collection of liquids held together by cell walls which experiences vibrations in a very different manner than a piece of steel would.
Ie. too much vibration heats up tissues which directly off rolling.
Roller drum tests work well for ranking tires against each other but they're fairly useless when trying to find the optimal tire pressure.
And that's before we even begin broaching the subject of vibration fatigue. If you need to be in a shaky environment for extended periods, you're going to get tired.