A good illustration of why we should not jump to conclusions about IQ from any single shot, and that the "rules" have exceptions that aren't often considered by many. "Higher ISO = increased noise" is one example of this, and many seem to take this "rule" at face value.
Not just one.
I do have a whole pile of shots in the two occasions (as shown above) to confirm that the iso/noise performance.
"Higher ISO = increased noise" is correct IF all factors remain the same. Nobody can dispute that . I think we have the consensus?? But since when shutter speed and aperture have anything to do with noise? And what are their co-relation?
Meanwhile we rely on luck in taking more pict in the hope of getting more keepers?