I suspect we might have to agree to disagree here, but the T450 and 2015 MBP make very different tradeoffs. I might be looking at the wrong model, but I see a 1

I suspect we might have to agree to disagree here, but the T450 and 2015 MBP make very different tradeoffs. I might be looking at the wrong model, but I see a 1600x900 screen (while my MBP had a 2560x1600 screen), and (admittedly high quality) plastic case vs aluminum. Immediately before the MBP I owned a Dell XPS laptop that stopped charging ~2 years into ownership. Aren't the processors not upgradeable in either case? I really doubt you could happily use a Haswell i5 processor in 2023 without feeling limited.. even if just because software (the OS, websites, etc.) assume a higher performance floor.