Technique and aesthetics are most important IMO.
They're also completely subjective and unmeasurable.
Besides, why hang out on a gear forum if you don't care about gear? I don't visit the 'art' forums, precisely because I have no interest in discussing subjective concepts of aesthetics.
What "evidence?"
How can you "measure" anything photographically without the photos?
Mathematics.
I don't need a photo to demonstrate that doubling the exposure will double the number of photons I capture in the same sensor area. In fact, a photo can't show me that at all. I also don't need a photo to demonstrate that, when read noise is the same, doubling the number of photons captured will also double the SNR. Ditto for many other things in photography. Digital photography, after all, is simply a combination of optics and electronics - both of which operate on known scientific laws, governed by mathematics.
Missed photos are not "evidence"; they're suppositions.
Which becomes evidence once you put them together, either qualitatively ('I'm missing a lot of shots in high-contrast settings due to shadow noise rendering the results unusable') or quantitatively ('shooting in sunrise situations with the 5D2, 75% of the shots I've taken have turned out unusable due to shadow noise, with the highlight positioned just below RAW clipping. With the IQ180, this drops to around 5%').
The video link I posted back aways showed one camera (the 7DII) keeping its 10 fps rate, while the other (the NX1) went from 15 fps, down to about 2 fps, after a minimal time shooting.
I agree we might not need any photos in that regard, to "suppose" that the latter camera is the one that will LOSE more shots than the camera which is consistently maintaining 10 fps.
Then it comes down to how you shoot.
If you shoot in quick bursts to capture specific moments, then the 15fps will give you fewer missed shots. If you shoot away at full speed for the entire duration of the action sequence, then the camera with the larger buffer might give you fewer missed shots.
Or, one can make the argument that high DR is not necessarily what makes for "great photographs" at all ... but in fact great subjects in optimal light (not okay images in sub-optimal light upgraded with a better sensor) are what make great photographs.
You can't make that argument at all, since you have no evidence to support it. All you have is evidence that shows that great photos can be taken with limited DR - not evidence that there are no great photos to be taken in higher-contrast lighting. The reason for this is obvious - there are hardly any great photos with lots of DR, because you just can't take them at the moment. It's like saying, 'There are no planets around stars other than the Sun, because we can't see them yet'.
There are plenty of great photos taken with 10 stops of DR. We have lots of these, because lots of cameras can capture them. There are far fewer great photos with 18 stops of DR. This is because no camera can capture them, and the only way to get them is with some sort of HDR technique (blending, HDR software, etc.). But the fact that these photos even exist suggests that there are far more great photo opportunities out there that are only being missed due to technical limitations.
Yeah, but you still need photos (of some size) to test/prove this out, don't you?
This is a completely different use of photos.
This is the use of photos to demonstrate the point in contention, i.e. 'X lens is sharper than Y lens, and this test chart demonstrates it'. In other words, it is evidence that supports an argument.
Which is completely different to your use of photos, which essentially amounts to, 'This guy's photos are crap, therefore his arguments are irrelevant'.
And, these days, the difference in sharpness is virtually negligible, so again it boils down to composition, light, and post-processing more than anything else.
Try saying that with a straight face after comparing the corners of the Canon 16-35L with the Nikon 14-24 at 60x40" print size. You can even shoot them both on the same body (A7r) for a fair comparison.