Based on what? Look, people wanted to see proof in data of games on both systems to see how they would perform on them. We're getting that now. But for some folks, these aren't the results they wanted, so the goalposts are being shifted instead of just saying "yeah, it is what it is here", and being open to it either staying that way or shifting back the other way when other points of comparison come about.
This is what's called an
emotional response, not a logical one. It's a bit striking considering people were waiting on objective data and now we're finally getting some, but it doesn't fit what they wanted to happen. There's nothing wrong with giving results their due, it doesn't suddenly mean the other solution is inferior. I wouldn't even be surprised if there are some BC games PS5 loads faster, we just have to wait for results to prove that (and hopefully they are honest results).
That wouldn't suddenly mean Series X's solution is poor, but I have a feeling some people here would try shifting the entire meta discussion into that framework hinging it all on a few examples favoring PS5, then putting those examples on a pedestal and being the only valid ones...or something.
I don't know why this tribalistic mentality when it comes to consoles is still a thing