This year's review cycle has taught me that I really only want reviewers to compare previous models more than 12 months old. I don't care how the Series 7 compares to Series 6. Tell me why I, a series 3,4,5 owner should upgrade? Same for the iPhones 13. Tell me why the 2-3 year old model will be better suited upgraded.
Only Jason Snell did this in a meaningful way -
https://sixcolors.com/post/2021/09/the-iphone-13-an-upgraders-guide/
Because, if I'm being more cynical....of course the series 7 isn't worth upgrading from a series 6. This isn't Apple's target anyway. They want series 3 and 4 owners to upgrade. so what's better from a series 3 to a 7? Can a professional reviewer lay that out?