We should already know how it performs, no? With 20 mpx, it seems like Canon might be mostly reusing a 1DX III sensor? And btw - I doubt, that 20mpx is enough for wedding photogs. If wedding photogs are using mostly a 5DIVs, noone's going to go down to 20, including us. 20mpx R6 might be just a complementary camera, depending upon what does it do. Actually photogs might be caught in between, as 20mpx is too low, while 45mpx might not provide enough of DR advancement over the 5DIV's 30mpx sensor. And no, wedding photogs don't need a high framerate gun.