What I still find slightly disappointing, although I didn't realistically expect it to have it. Was quad pixel AF.

R1 and R5 II still have dual pixel AF. Aka, still the same old system with presumably some software tweaks?

Man, not a lot separating it from the R3 at this point. It barely qualifies as a Mark-II. Much less the R1 title.

Like most of the specs are just copy and paste. Or minor incremental improvements but nothing game changing or even something to make anyone shooting an R3 want an R1.

They are basically the same camera.