You might want to read Zen and the Art of Motorcycle Maintenance which digs into this fallacy.
You might also be surprised how misleading objective IQ benchmarks are; the post processing in the camera's JPEG (and RAW processing... raw hasn't been raw for a long time) does a lot of stuff which is not well reflected by photographing a Siemens star.
You might want to read Zen and the Art of Motorcycle Maintenance which digs into this fallacy.
You might also be surprised how misleading objective IQ benchmarks are; the post processing in the camera's JPEG (and RAW processing... raw hasn't been raw for a long time) does a lot of stuff which is not well reflected by photographing a Siemens star.