Care to elaborate how Canon R6 beats Sony a7 III/a7R III in terms of photography? For video I agree, unless something unexpected happens it will be superior, but in terms of stills it looks like it will be the other way around. Other than personal attacks I haven't seen any arguments to the contrary, other than "probably better IBIS, more advanced AF", which are not possible to compare with just leaked specs.
I always find posts like yours comical because you are staring at spec sheets all day vs actually being in the field, shooting every single day on video and photography gear that is producing footage that customers are paying for. There is so much more that goes into a camera ecosystem that no spec sheets will ever tell you. Little things like ergonomics, lens selection, warranty support, temperature extremes performance, reliability, menu system, longevity, weather sealing, accessories, compatibility, real world battery life....my list goes on and on.
I'm not here to sell you on Canon, I couldn't care less either way what you end up buying, if a few posts on a Canon forum affect your buying decision then you are already off to a bad start. I have never owned a Sony, and I don't claim to know their product lineup; but what I do know is the stories I hear about reliability issues, quality control issues, lens quality control issues, non existent support, premature body failures....etc. I met a photographer at an event who had two of the latest Sony bodies; he mentioned that the sensor had just died in his previous Sony (which was only a year old) but that it was a good thing because he wanted to upgrade to the newest body anyway...this blew my mind. I have never heard of a Canon sensor dying in a little over a year in any body, even my Canon Rebel is 6 years old, has passed the 50K shutter count mark and is still going strong.
Long story short I am sure every spec sheet from Sony will tell you what you want to hear, but I guarantee you my little T6 Canon Rebel will take better pictures than any Sony on the list if that Sony's battery has already died, the lens won't focus, or the sensor has failed. My only first hand experience with Sony was handling a display model in a store. The buttons felt like cheap plastic, my hands were jammed up against the lens, the menu system was terrible, and everything felt like cheap plastic. I've never touched one since.
My 5DIV has shot in conditions with -20 degree wind chill, 130 degree blazing desert heat, was doused with a huge saltwater wave in Hawaii (my tripod still hasn't recovered), and still works like the day I got it. That type of reliability to me is more important than any spec sheet any manufacturer will ever release.
BTW I am far from a Canon "fanboy", I don't care what brand I shoot with as long as it meets my requirements (i.e. I did not get the EOS R because it had one card slot and that awful function bar). I got a Panasonic GH5 because Canon was not meeting my video needs. I would have left Canon long ago if there was a photography company that would better meet my needs. I am probably the least brand loyal consumer imaginable; I don't care who makes the equipment as long as it gets the job done. With that being said, for me, when it comes to photography and the types of photography that I offer; Canon has no equal. IMO when the R5 and R6 are released; for the type of video work that I do....Canon will once again have no equal.