No but neither does Overwatch or No Mans Land (in the graphics department). 

Wii U is stronger than PS3/360. Not by leaps and bounds, not even by much, but it is stronger. It has twice as much RAM and a more modern GPU. To get Breath of the Wild running on PS360, you would have to significantly reduce its memory footprint and likely reduce/simplify some of its effects. Sure, you could get a downgraded version running on PS3/360, but you could get a downgraded version of Uncharted 4 on PS3/360 if you made enough concessions.

Skyrim and GTAV one PS3 and 360 aren't in the same ballpark as BOTW. It would have to run at sub 720p, with maybe a low setting FXAA if at all, much less individual grass strands, much more pop-ins/weaker draw distance, and who knows what would happen to the physics. xD Skyrim and GTA V both didn't have physics as intricate as what's found in BOTW, and that is pretty CPU intensive. Let's not mention how all of it would perform. Skyrim wasn't much of an example for that, and GTA V struggles quite a bit at times, while Nintendo games are always great performers. 

It's possible some downgrades would be necessary, but I would bet that if in the hands of SSM or ND they would be able to produce basically the same product with those differences not being very perceptible. And a lot of games were sub 720p on PS360 so it wouldn't look out of place.

Eh, i kind of doubt it. ND in particular are incredibly adept at getting a lot out of a limited pool of resources (both on the tech and art front), but if BotW is pushing the WiiU close to its limits (which i'd say is a reasonable assumption), then exactly replicating BotW on the PS3 and 360 just wouldn't happen. Certainly not in a justifiable about of time, anyway.

Don't get me wrong, i'm pretty underwhelmed by BotW on the tech front (i think i'm just too used to seeing much better), but relative to the WiiU's hardware it's some pretty high-end stuff.

If there's anything from BoTW that the PS360 wouldn't struggle with, it would be the physics. Especially the PS3 has a powerful as fuck CPU. iirc, it beats the PS4 and XBO's CPUs. Only problem is that it's hard to optimize for. GTAV and Skyrim are bad examples, because they are multiplats, and thus haven't gotten the same attention and optimization as BoTW has gotten by virtue of being an exclusive. (I mean, Bethesda is notoriously shit at optimization, the early PS3 version is infamous for it).

I doubt the PS360 could run BoTW with the exact same visual fidelity as the Wii U, but I also doubt they would have to reduce visual fidelity as much as you make it seem here. It would probably be plagued by pop-in though, because the one place where the Wii U is substantially ahead of the PS360 is in the amount (and perhaps speed?) of the RAM.

I don't doubt it's very highly demanding for WiiU and would be for PS360 as well... what I'm saying on the ND is that they would probably remodel and cut in a way that it wouldn't be the "immense downgrade" curl-6, hynad and goodnightmoon are claiming. Sure it's quite possible there would be a downgrade in some areas and a possibility of better things in other, but being ND I doubt we would really have a subpar product (or if the team doing Zelda were also expert on PS360 HW).

I applaud you

Because I always like to throw gasoline on fire. Both the last of us and god of war 3 managed to run on PS3. Which still look great visually today, as does ratchet and clank a crack in time.

It looks good... for a Wii U game, but isn't even near Horizon. The Wii U is an outdated console and with all the magic of Nintendo left especially the artistic department they made a game which looks decent by today's standards defined by X1/PS4 and great for Wii u is standards. Would love to see a comparison between Ratchet and Clank a crack in time's open worlds and those of Zelda Breath of the wild wind, being both cartoony.