Its testing different raw types like 5d3 to try to get rid of any dots like that, banding, etc.
I'll be honest dude - I haven't noticed any banding or dots. That all disappeared for me a while back.
Just ran the tests and the only differences I noticed were exposure changes and differences in noise that are so negligible that I can barely tell which is better

I shall continue to try the tests in different environments though.
In other news!!
I think I just made some kind of breakthrough! I shot some rooftops etc to try and replicate to the orange/blue color moire artefacts to see if any DNG's from the test would yield less moire than others and sadly there was no real difference between them...
However! I just played around a bit more with the settings inside of lightroom and found that choosing 2003 Camera Calibration Process pretty much gets rid of it all together!
If anyone else could try this out in ACR or Lightroom then let me know it would help me work out if this really does help or I just got lucky on one shot

Cheers!
