Sony a9 II sensor review published by DxOMark. They have posted the test results and the flagship full-frame sports camera achieved a score of 93 points.

The score of 93 points puts the Sony A9 II to the 21st place in full-frame and MF sensors. This is one point above original a9. Compared Canon EOS-1D X Mark II and Nikon D5, a9 II is about 5 point above these cameras.
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https://www.dailycameranews.com/2020/03/sony-a9-ii-sensor-review-scored-93-points/