The sad fact is that the M2Pro chip is actually slightly faster in single core speed than the M3Pro chip
That's not true.
MacBook Pro (14-inch, Nov 2023) Benchmarks - Geekbench
browser.geekbench.com
Granted, the memory bus is slower, and there are fewer p-cores. But individual cores are faster, so overall, single-core will still be 17% faster, and multi-core 7%. That's not much, but it's not nothing.
(Compute is slower, though. By less than the margin of error.)