All reviewers make mistakes from time to time. So I wonder why Geekerwan's review is criticized so much. Is it because they're not Anandtench? Or because their review doesn't favor Apple? Or because they're Chinese?
For me, there are too many conflicts with previously established baselines. The power consumption for A14/A15 reported by Geekerwan is dramatically different from what Anandtech reported for similar tests (by almost 80%)! E.g. Andrei measured over 4Watts for these chips running SPEC (and close to 5W in FP tests), Geekerwan only reports under 3 watts (7:18 in the video). These numbers do paint a daunting picture for Apple's 3N product, showing A17 pro being 20% less efficient than A16.
Now, at around 8:20 he reports a different set of numbers (I assume total device power draw?), which are much closer to Anandtech measurements. According to them, in SPECint A17 Pro is 10% less efficient than A16, 5% less efficient than A15, and about as efficient as A14. In SPECfp, A17 is as efficient or more efficient than there predecessors.
If we go from this second set of numbers (which IMO make more sense), it would appear that Apple is now targeting peak performance while trying to roughly maintain efficiency to previous generations. Maybe this is what the new CPU u-arch are about? More performance? Apple M-series have been criticised for their relatively low performance ceiling given the chassis capability, especially on desktop. Maybe the new core is designed to address those limitations. For the phone, slightly higher peak power consumption won't matter. For Mac, it could mean a nice performance boost.
P.S. Speaking of performance. Those SPEC2017 numbers quoted by Geekerwan are absolutely insane. That's comparable to an Intel i9-13900K, a 5.8Ghz enthusiast desktop GPU that draws over 30 watts for the same tests. I really don't understand how one can be disappointed by this level of performance at 5x lower power draw. People shoulder really adjust their expectations. Apple engineers seem to be held to such a high standard that it's considered a disappointment if their smartphone does not outperform an overclocked x86 workstation while consuming less power than an ARM mid-performance core. Come on.