What a silly hill to die on. Some releases are certainly more exciting perf wise than others. Usually excitement is tied to some technology upgrade like SSD or new ram or some such thing. This is a boring upgrade.
I didn't die on this hill, I pioneered it and conquered it. I'm developing it. See the difference? What is silly is expecting an exponential increase in performance from one generation model to the next. That never happens, not at Apple, not anywhere.
Do you even know what exponential means? 10% YoY is exponential.