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I have a slightly different view. Dynamic range is important, but if you take my ASI294 (14 bit with a sensor able to accumulate approx 64K electrons per pixel) it has the same dynamic range at 0 gain (4 electrons per ADC step where the ADC can quantise the entire range of the sensor) and at 120 gain (Unity) where whatever trick they play with these sensors cuts the read noise right down but the ADC can only quantise 1/4 of the sensors range.
Same dynamic range but brighter stars saturate a lot earlier as while the dynamic range is the same at the two gains, the absolute range is massively different. At zero gain the absolute range (If you assume 100% QE for simplicity) is 8 to 64K photons, at 120 gain it is 2 to 16K photons. Good for the really faint stuff but stars saturate quickly.
I am trying to work my way into buying a 6200. I tested my new scope against my wife's old Nikon D3 as it is full frame, sharp stars edge to edge and barely any vignetting (Through a 2" filter about 45mm from the sensor instead of a large format filters maybe 20mm from the sensor) so a full frame cam looks attractive.
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