Thanks for the video. Reminds me of those $500+ TruBlu vac hoses everyone is crazy over yet they still have more gaskets/connections without bringing obvious results compared to a $100-$150 20micron 1/2" hose. The magic is in removing the bottle necks. I'm guessing your test difference would've been greater if the brass/steel service port on the ref circuit was 3/8" or 1/2" king valve type. A Supermarket refrigerant loop would be a good test bed. Would love to know. I'm guessing CFM matters when capacity is massive and bottle necks are removed.
You also need to check out Jim Bergmann from MeasureQuick's videos - he has more knowledge and understanding about evacuation than anyone I know. I have really appreciated his support and ideas!
