The minimal CPU/RAM difference suggests that it's pointless to develop PS4 Pro exclusives. That's why Cerny has said that a new generation is also defined by a new CPU microarchitecture (aka Zen) and vastly bigger/faster RAM as well.
So, what would be the benefit of PS4 Pro exclusives? Higher GPGPU usage (better physics maybe?) because of the beefy GPU?
I mean, OG PS4 is already underutilized by the vast majority of 3rd party devs. GPGPU is still not the norm.
How many games are as optimized as Battlefield 1 (GPGPU-accelerated physics/destruction)? That's precisely the problem, not the lack of PS4 Pro exclusives. PS4 Pro was never designed to be a wholly new generation and contrary to the popular belief, the same applies to Scorpio as well.
Would people be happy if, for example, Microsoft ditched OG XB1 and made Scorpio exclusives? And then a few (2-3) years later down the line Sony released PS5 with a Zen CPU? Do you think that Scorpio exclusives would not be shackled by the relatively weaker Jaguar?
Hell, people tend to forget that even the lowly Jaguar is a generational leap compared to Cell's PPE in everything, apart from flops/SIMD performance. That's why games like Middle earth: Shadow of Mordor have vastly improved AI (Nemesis system) only on PS4/X1. PS3/XBOX 360 versions don't have the same AI system, even though people are misguided to believe that Cell/Xenon are "superior" CPUs (MHz myth).
http://kotaku.com/shadow-of-mordor-is-way-less-fun-on-old-consoles-1660387779
https://gamerant.com/middle-earth-shadow-mordor-next-gen-differences/
http://www.gameinformer.com/b/news/...esis-system-handicapped-for-ps3-xbox-360.aspx
IIRC, it's 30 watts at 1.6 GHz and 50 watts at 2 GHz for 8 cores and 28nm. It's not as energy-efficient as ARM, but it's definitely better than the FX series.
Does the APU that you mentioned have throttling? Because console APUs need to have steady clocks when they run games (Switch is the same). Throttling can reduce TDP, but it would be disastrous while running a game.