Here's how I view/viewed it.
A confirmation bias was formed that the top tiers were essentially equal or that universes were balanced. The feats could largely be put in place to not so much convince myself but be used as a counter against others. So everything fit in fairly well for a time. Outliers here and there but everything could at least be matched up to some degree. That's not to say that I had everyone exactly equal mind you as I always had Superman above Hulk in strength, but it was what you would call a "tiering" of some sorts. I viewed/view it to what I figure the intention of writers would write in a comic and used feats to disregard the outliers/high feats. Fitting my headcanon in there with feats to make up differences.
As time went on, DC started pulling away, and pulling away badly. It didn't change my headcanon of how I view fights in my own mind as I feel the intention is still the same, but you can't in good faith actually match those feats; made worse by Marvel never advancing and even devolving if anything. It bothered me back then when I perceived "falsehoods" about feats that were misinterpreted or things that could be matched as I felt the evidence was there. Now? The evidence is grossly on the side of DC and it's more freeing because I literally don't give a shit because there's nothing to say against it for me. It would feel wrong to argue against it for me.
Both the quality and quantity of the feats increased tremendously. Arguing against it would be like arguing Thor actually had really good years this past decade... did a lot of cool stuff, him fighting Hulk could be anyone's game.
I still have my headcanon of how fights could go and that won't ever change, but now I lack evidence without constraining the other side to play in my boundaries.
This is overestimating how much I ever cared about individual battles as opposed to context, but this is how my viewpoint changed on the "feats" side of thing in cross-battles. There's nothing to get worked up about anymore because I view the evidence as being unequivocally on DC's side. Why would I care about people that are right? I agree with some things just being unmatchable.
It went from being able to check off feats from a similar level to those higher end feats being an average minimum. Things just no longer make sense to have cross-company battles for me.
It also physically pains me to hear about Comicvine, CBR, or those wiki/youtube battles desperately trying to downplay DC and play up Marvel. The shoe would probably be on the other foot if I still read comics and didn't hate both modern companies. The "feats" are the least of that problem though...
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