The only thing Ryzen appears to remedy with the official Blender builds is that it's not being hobbled unnecessarily like the construction cores appear to be.
2009 Lynnfield = normal scaling. Tiny benefit from the "SIMD" build, tiny hampering from the "AVX2" build
Piledriver = terrible performance from official Blender builds, massive performance increase from "SIMD" build and "AVX2" build, with the former being faster than the latter
Phenom and even older AMD architectures beating the construction cores, even when CMT is off? A CPU running DDR2 800 is more efficient? Sure...
This data progression doesn't look like it fits the claim that the reason we're seeing it is because of Piledriver's design inadequacies. I don't buy it as being useful for measuring Ryzen's performance versus the construction parts:
23,437 02:08 min : AMD FX-8350 „Vishera” (4M/8T, 4.0 GHz, 4.2 GHz Turbo, DDR3-1866 DC) von Nero24
25,518 09:30 min : AMD Athlon II X3 400e „Rena” (3C/3T, 2.2 GHz, kein Turbo, DDR3-1600 DC) von donmartin3000
25,805.06 FX-8370E (@ 5Ghz) single thread per module 25,805.06
31,968 11:55 min : AMD Athlon II M320 „Caspian” (2C/2T, 2.1 GHz, kein Turbo, DDR3-1066 DC) von Nero24
37,137 08:37 min : AMD Athlon X2 7550 „Kuma” (2C/2T, 2.5 GHz, kein Turbo, DDR2-800 SC) von Nero24
38,784 03:58 min : AMD Phenom II X4 810 „Deneb” (4C/4T, 2.6 GHz, kein Turbo, DDR3-1066 DC) von Nero24
51,282.05 Sandy Bridge 2500K @ 4.5 Ghz
51,306.17 i5 750 (“Lynnfield” 4C/4T, 3.8 GHz)
Let's see The Stilt's builds progressed out like this, eh?