I don't know about that either.
Everyone THOUGHT it was better because it LOOKED like a real camera should but it was actually incredibly front heavy and they didn't even have their own EVF. I had it on my shoulder and didn't like it at all for it's ergonomics.
There was a lot of snobbery towards BMD at the time they launched CION about how this was how a camera should be designed by BMD. (AJA and BMD are also rivals)
You could say Ursa was their response to that criticism and interestingly was also a failure (in terms of sales). Again, users think they know what they want in a product but aren't always that knowledgeable :-)
AJA basically gave up on their camera. It was still born. They didn't even try to improve it much after one firmware update. From memory you couldn't even do RAW on board, you needed another external recorder that was never released.
MANY say here they have prefered the look of the 4K sensor from BMD's cameras. But no one would say that about the same sensor in the CION.
What's always misleading in these discussions is that people assume an "off the shelf" sensor just plugs into a camera and away you go. They aren't really off the shelf at all. Even these off the shelf ones still have many points of tweaking, calibrating and customising. Also, colour science is subjective. It's not truth, but a version of truth.
There are so many ways that customisations can change the end result. It's pretty annoying to see how people assume that one sensor can be the same in different cameras. They really aren't at all. Otherwise there wouldn't be any visual difference shooting RAW from a GH5 or another camera rumoured to have the "same sensor"
Also amusing to see certain users picking apart the images stolen from an NAB pre-production demo camera by judging them from a JPEG posted and then re-graded by others.
Usually BMD make firmware builds that disable the record function for demo cameras like this for this exact reason and the sensor work is still very much WIP. I don't think it's very fair to judge the camera in this way. If you want to nitpick it and draw conclusions, wait till official footage is available and consider the images that are around right now as the direction they're heading in.
JB