Yeah, there was a Sony patent that emerged a while back that seemed to be about their own DLSS, similar to what Nvidia is using. Doesn't mean that that's what they will go with, as patents tend to come and go. But the point is that Sony has their own solutions for some things, MS went a slightly different direction but the games will be glorious all around.

Quote from digital foundry

 " Every single developer I've spoken to developing for PS5 has been evangelising how easy it is to work for".

“It’s essentially the same development environment as PS4 and you scale up from there, for the new powers, the features, and whatnot. I can't stress enough how happy developers seem to be with this situation.”

Easy to develop for is different then being more capable. Hence the OP regarding RDNA 2 

Diferent sure, but not opose. As far as we know the ps5 could be both. Untill its out we don't know but we do know that so far devs prefer the ps5. 

prefer? how the hell did you get from that statement

I mean AMD confirmed the disparity but sure let’s drag this out a little more haha 

If we forget for a moment about PS5 vs XSX (which is the part that makes everybody shut their doors) and just focus on RDNA2 vs RDNA1, there has been a few articles outlining the differences between them.

"Ever since AMD announced the RDNA2 architecture, they have reiterated a singular goal: they wanted to achieve a 50% jump in perf-per-watt over RDNA1. And that they would accomplish it entirely with architectural improvements, not process improvements..."

"Along with numerous optimizations to the power efficiency of their GPU architecture, RDNA2 also includes a much-needed update to the graphics side of AMD’s GPU architecture. RDNA (1), though a massive replumbing of the core compute architecture, did not include any graphics feature upgrades. As a result, AMD only offered a DirectX feature level 12_1 feature set – the same as the Radeon RX Vega series – at a time when NVIDIA was offering ray tracing and the other features that have since become DirectX 12 Ultimate"

https://www.anandtech.com/show/16202/amd-reveals-the-radeon-rx-6000-series-rdna2-starts-at-the-highend-coming-november-18th/2

And about Primitive Shaders and Mesh Shaders being exactly the same, not quite. 

"A Mesh shader is a new type of shader that combines vertex and primitive processing. VS, HS, DS, and GS shader stages are replaced with Amplification Shader and Mesh Shader. Roughly, Mesh shaders replace VS+GS or DS+GS shaders and Amplification shaders replace VS+HS."

https://microsoft.github.io/DirectX-Specs/d3d/MeshShader.html

"Mesh shaders represent a radical simplification of the geometry pipeline. With a mesh shader enabled, all the shader stages and fixed-function features described above are swept away. Instead, we get a clean, straightforward pipeline using a compute-shader-like programming model. Importantly, this new pipeline is both highly flexible—enough to handle the existing geometry tasks in a typical game, plus enable new techniques that are challenging to do on the GPU today— it looks like it should be quite performance-friendly, with no apparent architectural barriers to efficient GPU execution."

https://www.starcitizen.gr/2642867-2/

Not necessarily. Most of the loss in power does translate into... well... heat. If a lighter supply is feeding a more powerful machine, there's less heat generation from the PSU. In other words... if the PS5 does have a more powerful unit, it might be generating more heat. 

Actually, the exact opposite could be true.

If a 350W ps operates in its "comfort zone", and a 320W ps operates slightly above its "comfort zone", then the latter ps generates more heat.

However, the whole thing depends on the voltage regulator circuitry. Contrary to what you seem to think, the ps does not feed "the machine", it feeds the voltage regulator circuitry (where much more heat is generated than in the ps). The vrc is the place where money vs heat is traded at design time (more phases = less heat but higher costs).

Nothing has been revealed about where the ps work or how the vrcs are built so any discussion about "this comsole is better than that one" is pointless.