Canon - EOS R1 vs Panasonic - Lumix S5 II

These two are evenly matched on the broad strokes, with the decision sitting on which individual spec advantages weigh more for your use.

Pick the EOS R1 if you care most about af points. The biggest gaps in its favor are af points.

Pick the Lumix S5 II if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight.

Both ship with comparable sensor size, megapixels, max video, so those specs don't separate the two — focus on the differences below.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.