We'd love to participate in your test. But going to a race where you have to ride the brakes isn't much fun. Here's what we suggest.
Do your 1080P or 2K finish. But also do a 4K finish. 4K is the future... and the future is now. Why not test what is... not what was. Up-rez where necessary. People need to know what to expect when 4K delivery options happen (like now). Down-rez the higher resolution cameras to 4K. Look forward. Studios are preparing to re-release old movies shot on film with 4K scans. Show what an image will look like on a 60' screen. Everyone needs to know what their original is capable of... starting with tests like these.
Pick your (Zacuto chosen) team to do the post. But also give each manufacturer their own footage to get processed under their control. That is likely to produce the best results and motivate the companies to show the best from their cameras. No excuses. For example, will RED footage be kept R3D all the way through? And if so... by whom?
How about it Zacuto? Let's do this.