What I have noticed is that higher-MP images to start with tend to look a little bit higher in acuity when shrunken down to web size and seen at say, 1600 pixels wide on this 30-inch monitor. The real key that I have seen is that the degree of sharpening applied to the images be "right" for the final output size...meaning a small pixel radius sharpening at a high percentage to overcome the anti-aliasing filter's softening effect, like say .3 pixel radius, 300 to 500 percent. Then, the full-sized image needs to be reduced to a screen-sized image; I like to do that in steps, sharpening between steps. With software like Lightroom, that process is a bit different.
I'm not sure what to make of your comment "I appreciate constructive criticism but I have no appreciation for criticism just to be criticizing"...not sure if that's addressed to me or not?
My suggestion would be to figure out what white balance setting works best with each camera and specific flashes or specific situations. Some cameras have better auto-WB than others; some flash units or umbrellas have different color temperatures that they give; different software apps yield different results; sharpening routines have to be tailored to the initial capture; some new cameras have NO AA-filter, so the initial "acquisition" sharpening pass can be omitted, and so on. For on-screen images, the whole process matters.
As far as test subjects: for close-up, small-area photos, it does not take many megapixels to make a good, clear image that looks great; as the size of the captured are grows larger (think hillside covered with wildflowers) and more-detailed, it takes more information to convey a sense of richly-detailed information, and that's where the higher-megapixel sensors start to show an advantage. This flower test scenario is a close-range, artificial light test done on synthetic materials; it's a valid test for what it is, but it's not universal. It shows a yellow cast with settings used on Camera A, with that light source and that lighting gear, so your notes would give you a good source of info. But...again, it's limited data. How was the white balance determined at the shooting stage, and in software?
Adobe products cannot read Nikon's encrypted WB data from Nikon .NEF files made in the D2x and later camera generations, so...again...we come back to "the process" as much as to "the cameras"...
Another observation. I just looked at the A,B,C images again: image A appears under-exposed compared to the other two...the image looks dimmer, so the ISO performance might be a little bit different too.