Canon - EOS R50 vs Sony - α9 III

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 R50 if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight.

Pick the α9 III if you care most about af points and in-body stabilization. Its strongest claims are af points, in-body stabilization, log profile, among others.

Both ship with comparable megapixels, 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.