Sounds reasonable and lines up perfectly with PC GPU tests.
I don't think a difference might be seen if a game is well-optimized to a locked framerate though, unless you're Digital Foundry and notice that the magic they did really wasn't magic at all.
But that's a whole other thing. It's the all too common scenario when a game is struggling to maintain a locked framerate that will show the hardware differences the most. That's when pure hardware specs usually matters.
That sounds good in theory but don't really make teraflops matter any less, the target resolution is just lower. It happens on Xbox One today, and Switch, even PS4 Pro. And if the strategy is to simply target 1080p instead of 4K, then what happens on Lockhart when a game comes along that can't quite reach 4K at the targeted framerate on the XSX so they go for a lower resolution?
720p on Lockhart? 20fps? Downgraded visuals?
I just don't think there is any magic that makes hardware limitations disappear, there is only smoke and mirrors and clever compromises.
In the end I understand that the end user might not care anyway depending on why they bought the cheaper console. But that's not why I quoted what Brad said, I just found it interesting that the teraflops count would matter between PS5 and XSX but not between XSX and Lockhart. They might actually matter in exactly the same way, just not on the same degree, all depending on how much the higher spec console is pushed and how clever the dev is when it comes to hiding the required compromises on the lower spec console.
DF will have plenty of work next gen that's for sure! ;)