The problem is, that an endless number of reviews/tests exists, but it is difficult to rely on the scores/verdicts when one wants to draw conclusion for real life. This is not only because the testers have usually a strong "conflicts of interest", but also the test conditions are different, not to speak about different lenses, when AF tests are performed (in addition, for us UW-photographers, our "real-life" is just a small facette of the spectrum). As a results.e.g. Sony mirrorless cameras are regarded by some to have worst AF of all , while others think they have the best AF of all cameras...
To me it seems impossible to draw conclusions without doing side-by-side testing on my own. Therefore the opinion of people that have several cameras and can directly compare them from their own experience seems to me the really valuable information...
I find the test results of the latest Canon DSLR camera D90 remarkable: The reviewers find that AF in the mirrorless mode works already better than in the regular "mirror-mode": https://www.dpreview.com/reviews/canon-eos-90d-review/8
I had the opportunity to talk to several DSLR UW-photographers during a UW workshop last autumn: under delicate conditions (e.g. low light in caves), many used the "live-view" mode of their D850 and D500s, i.e. they use them in the mirrorless mode. Of course, AF will be worse compared to a dedicated mirrorless body...
The improvement in AF of mirrorless cameras, together with the need for liveview mode makes me believe Massimo is right when he says the DSLR lines will be soon discontinued...
Wolfgang
tin realwith all these