Idle efficiency is mostly useless for the use cases I mentioned. Your PC would need to spend something like 80% of the time in idle for it to make up the difference anyway.
Also I'd like to point out, the highest CPU power task I do is video rendering. Its not something I do every day, not even every week. And rendering a video takes less than 10 minutes of maximum power, so I'm probably using maximum CPU power maybe 0.1% of the time. I don't know the exact number but its way less than 20% of the time where my CPU is at full tilt.
I can say for sure, the majority of the time my PC is in a low power state, with the various tasks I mentioned previously.
And I game at 120 FPS max, where efficiency differences of CPUs is unlikely to be all that different.
TPU for example shows Zen5 using anywhere from 15 watts less, to 25 watts more (on average) than 13600K in gaming, which even in the best case isn't enough to make up for Zen5s higher idle power, but they are testing at frame-rates higher than my limit, which is unrealistic for my setup.
When the FPS is locked to 120 FPS, the difference in gaming CPU power is probably miniscule with Zen5 vs. Raptor Lake.