I found your write up, very informative about the added sharpness (the problem) and the excessive AA (the overcompensation).
While researching I found that people on Resetera responding to you have no grounding in reality. This particular response was cringeworthy as they have no idea what calibration even is apparently? Nothing could be more neutral and non-bias than representation on a calibrated display.
WEEEEEEeeeel excuse him! What a dimwit.
I don't post on RE that much, for the simple reason if you say milk is white, somebody comes along and tells you it's not. But then you're not really allowed to ask why and have a discussion. People are in mods pockets, and sadly, nobody has a sense of humour. I have a sarcastic posting style, which on RE is suicide because nobody there can take a joke.
NeoGaf can be bad with people not agreeing. Heaven forbid you post anything Xbox positive in this thread, because Sony > MS 20:1 here. But here, you can at least have somewhat of a discussion with most people. Sure most wont listen

but you can at least discuss things without people running to the mods for no reason.
As per that original post, I actually forget what it was all about? If memory serves me, Resident Evil 2 has a sharpening filter applied to its visuals. This causes a lot of noise with high frequency detail, so, high specular components. Essentially anything bright will be turned to white, and look overbright, but more importantly anything small and thin will stand out more. So I'm the case of let's say rain outdoors, it's much sharper and aliased, and flickers. Using TXAA+FAA will help with this, as it's a post process filter which is applied to the whole screen. it's faster than traditional AA because it doesn't have to detect edges, however it's also like putting an entire blur over the screen. Far detail is blended, but sharp pixel perfect effects (like that rain, or your reflections) are blended together.
The Pro version only uses singular AA, and as such looks sharper. Much sharper. But also doesn't blur these details out. The X version uses both and looks more blurry (despite being higher resolution even), especially on things over distance. But it won't have this attifacting but, well, the AA is aggressive to the point of removing that high frequency detail.
I seem to remember there was also talk about colour grading as well? Which is a bit busted in RE2 as they push their blacks into blue territory.
Of course, you try discussing this with little Tommy who doesn't have the first clue what AA even is, much less writes his own shaders and understands the language behind them...