What you're talking about is a large reason why I'm enjoying the "tank trials" series they have going now.
As you know my "area is nems". Many folks looked at the recent tank trials trash with Triton and immediately thought "welp back to water changes". Somebody even said it here. I looked at it and said, "This is why we say wait and let your tank mature before adding an anemone." Call it the uglies, call it bacteria populating, call it what you want, there are things that happen in our tanks in their first 6-12 months of their life that we simply don't fully understand. If BRS can crash a tank packed full of corals in the first 6 months, that should be an eye opener to a lot of people in this hobby.
So while I understand it would be cool to see all of the different methods side by side and see how they shake out, I feel the longer term, 2 years on Zeo, then swap an established tank to 2 years on Triton...etc is a better representation of the product, then setting up new systems and testing them side by side. There are simply too many variable with a brand new system.