No, I was not aware of that. For others searching, this is the post: https://forum.dxo.com/t/pl4-gpu-benchmarking/15178/21
There is also the Link to a google spreadsheet with the results.
To answer my question: it is NOT linear. In this test teh 1060GTX has 2.3 MPix/sec while the 3080RTX has 4,7 MPix/sec (-> DeepPrime export twice as fast)