Fair enough, it's just numbers for thought. It is just like comparing flow numbers from different benches, you are going to get a different number, but still get a general idea of flow even though they do not come from the same bench.
I trust Greys numbers. It's bullshit to say all Dynos read differently. They may show raw numbers that are different, but the corrected numbers should be less than 1%, just like a flow bench.
Liars are liars and they will lie any way they can. It's not the dyno's fault if the numbers lie. That is an operator issue.
If Greys dyno says it made what he says it made, that's what it made.
When someone says don't compare flow bench so ready Dynos you can know they don't know much about using measuring tools, which is all they are.