Originally posted by mtgmansf First of all, they are like a German version of consumer reports - generalists and masters of none/nothing. No one else would rate the Sony A99II or Canon EOS 6dII anywhere near the Pentax K1, since these both have either a compromised sensor, performance, or design. Also, to rate the Sony A7III in front of the Nikon D850, Pentax K1, or Canon 5d IV is simply absurd, unless video capability is given huge weight in this report (which I have not seen - how about a link?).
Stiftung Warentest tests cameras for consumers and clearly states criteria for rankings. It is a completely independent foundation - no add online or in the printed paper. Same reason why there is no link, you pay for the paper verion or the online test.
They test what you need while we tend to be carried away by features we think we need. If you are into a certain technology you do not need consumer test results. If you need an overview, go for it.
Resuls are rankend from 1-5, one meaning very good and five meaning something is wrong.
If you have not read the test criteria, you should not judge any ranking. Consumer magazines often test materials for dangerous components, quite often some fishy plastic part can cause a low rating. So you can always learn something, get a new pesrspective... and if your are fedup with tests that present a Amazon, B&H, Adorama link at the end, this is the place to go.