Interesting conclusion. Why is that definitive?

I also compared Horizon: Zero Dawn SDR (16 watts) and HDR (17.3 watts). Only 7.5% less battery life for much better contrasts:

You are talking to someone that only cares about Nintendo Dominating the market and will make any excuse for them. 

Perhaps I read your stats wrong but I thought I seen double the wattage in some tests, 10 watts to 20 for HDR....?

Then you read it wrong, indeed.

~10 watts was the game running with 45 fps, both for HDR on and HDR off.

17 - 20 watts the game running with 90 fps.

I've been tracking Nvidia's white-papers (and the research in general), and there are a lot of features of Visual Deep-Learning that they haven't yet added to current "DLSS" versions, but they're being developing in the field. 

For example, this paper where they introduce compact-NGP, which is an even more efficient NGP (Neural Graphics Primitives) model than Instant NGP. 

https://research.nvidia.com/labs/toronto-ai/compact-ngp/

NGPs can eventually be used for better ray-construction and lighting in general, dynamic real-time asset generation, efficient physics simulations, smoother animations, etc. In the paper they're initially using them for less-lossy texture-compression, which can make LOD-management even more seamless, but the possibilities are pretty diverse. 

"Compact neural graphics primitives (Ours) have an inherently small size across a variety of use cases with automatically chosen hyperparameters. In contrast to similarly compressed representations like JPEG for images (top) and masked wavelet representations [Rho et al. 2023] for NeRFs [Mildenhall et al. 2020] (bottom), our representation neither uses quantization nor coding, and hence can be queried without a dedicated decompression step. This is essential for level of detail streaming and working-memory-constrained environments such as video game texture compression. The compression artifacts of our method are easy on the eye: there is less ringing than in JPEG and less blur than in Rho et al. (though more noise). Compact neural graphics primitives are also fast: training is only 1.2-2.6x slower (depending on compression settings) and inference is faster than Instant NGP because our significantly reduced file size fits better into caches."

Here is another paper (not from Nvidia) that goes through the details of how NeRF's (which NGPs are a generalization of) can be used in rasterization pipelines. There are some example assets on their website. 

https://mobile-nerf.github.io/

Says the person hellbent on dooming them because no GTA.

It doesn't (or the additional power it is so negligible, it is not measurable).

I tested it with the in-game benchmark of "Marvel's Guardian of the Galaxy" on my Steam Deck OLED.
The darker screenshots are with "HDR on".

"low" preset: both 45 fps on average, "HDR on" with a very tiny performance advantage (0.1 milliseconds CPU frametimes + 0.1 milliseconds GPU frametimes), "HDR on" rendered 2 more frames (0.1%):

"high" preset: both 40 fps on average, "HDR off" with a very tiny performance advantage (0.2 milliseconds CPU frametimes, 0.1 milliseconds GPU frametimes), "HDR off" rendered 5 more frames (0.2%):

I never doomed them at all i said it might slow down switch 2 sales and hype down  a bit, but that's for another thread. He makes a excuse for everything 256gb is not enough space for something expected higher then ps4 level graphics, especially when permalite gives him great reasons as to why people will end up with games that don't even work in the far future. 

He doesn't make excuses at all because that is his opinion. I share the same, I absolutely do not keep all of my games downloaded and I also doubt millions of other consumers do as well. It's nice and all that Permalite is worried about his physical games in the future and it's unfortunate but it doesn't mean I expect Nintendo to put as much storage in the console as possible because they absolutely will upcharge us. Permalite is right about us as consumers should want as much as possible for our money but we live in the real world where corporate greed will take precedence. What type of prices are you and/or Permalite expecting for Switch 2? What device delivers 256 GB of on board storage with all the other stuff we expect from Switch 2 with a dock for 399.99? Steam Deck 256 GB with LCD and no dock is 399.99. Do you think Nintendo should aim for 399.99 or less if possible? Or should they aim higher and put in more storage?

The main gain from Lovelace is the die shrink from 8nm to 5nm (it's listed as TSMC 4N, but this is actually 5nm), so if you're doing the die shrink anyway, you're getting most of the benefit of Lovelace. 

We know the Switch 2 has some Lovelace features because it was in the T239 leak (I forgot what it was), so they did take a few things from the Lovelace chips. 

The other thing I believe Lovelace has is Frame Generation, but it's kinda pointless for Nintendo because Nvidia frame generation doesn't really run well unless you are getting 60 fps, so it's only useful for frame rates above 60, which most televisions don't support and who knows if the Switch 2 screen is even higher than 60 Hz. Ray reconstruction is still supported by Ampere chips if Nintendo ever wants to use that. 

My guess is if the chip is 5nm Ampere shrink may have saved a few bucks, not go all the way with a Lovelace chip if you're not using the Frame Generation functionality anyway.