GTA 5 runs at 30fps more often in the countryside than Zelda does on Wii U which can be directly compared and like I said it does so even with lots of explosions and enemies on the screen at once. Zelda Wii U on the other hand frequently drops to 20fps going by DF while GTA 5 only does so in Downtown LS.

Infamous 2 is harder to compare because the freedom and speed of movement is far greater in Infamous than Zelda and it takes place in a city that is always more hardware demanding. Still with all of that and destructible environments and while still looking decent Infamous 2 never drops below 30fps. I'd say Zelda on PS3 running at 20 to 30fps like the Wii U version can happen.

GTA 5's actual size (as in land) is much smaller when you look at actual surface. In that sense Xenoblade X on the WiiU dwarves all (and shits on GTA V PS3 in both resolution and framerate). BotW has way more actual surface to render. GTA V drops way frequently and way lower in more parts on the PS3. BotW only in a single town and (at first) with some enemies. Most of those fps issues have been solved already.

Infamous is maybe a couple times the size of the tutorial area of BotW, not even that. The physics are not comparable (check the popular HZD vs BotW physics comparison for reference). Being in a city has nothing to do with it. It's all assets that need to be rendered, be it grass or blocks with textures. Lastly, the PS3 could hardly run Skyrim properly. Only after patches did it run somewhat playable, but not a whole lot better. Single digits fps later in the game.

You realize how crappy GOW3 looks today, right? I mean, look at those gameplay pictures.

Anyway: Zelda BotW, Mario Kart 8 Deluxe, Arms, Splatoon 2, Mario + Rabbids (looks like a cg honestly), Pokken, Super Mario Odyssey, Sonic Forces, Doom, Fast RMX. There you go. Just take a look, they either have better textures, lightning, etc, and/or run at higher res.

I think people are beginning to forget how much the visuals have improved since the 360/PS3 days. I recall initially being underwhelmed by the leap from those to PS4/Xbox1, but going back to the previous gen now can be quite jarring.

The Switch is definitely quite a step up. The portable mode visuals are comparable, but given it uses a smaller, 720 resolution screen, it tends to look great. Those portable visuals will always look bad when blown up to fit a monitor, but that was never their intention.

Haha Arms, Mario + Rabbids and Sonic Forces? Seriously? No, no they don't come anywhere close even in docked mode. Mario + Rabbids looks as good with little happening on screen and a fraction of the scale of God of War and God of War 3 on PS3 runs at a higher framerate too. Sonic Forces and Arms aren't even in the same league.

Those gameplay pictures you picked show the game in the worst possible light. In any case GOW 3 Remastered on PS4 which I played through recently only features a bump in resolution and framerate completely blow these away so its safe to say that it looks better even on the PS3. Zelda BOTW is hard to compare due to it being open world with incredible physics but both look comparable with BOTW having the edge in effects, lighting and GOW3 with better textures and character models.

ARMS is pretty impressive. Mario + Rabbids is on the Snowdrop Engine.

GTAV on 360>> zelda, it's doing way more technically, and looks better. GTA5 has lots of simulated people and lots of cars and lots of other simulated systems running concurrently, which incredibly taxing, on top of all that it shaders, IQ, and textures are all better. Ii Don't think wiiu can handle GATV. pics are from Digital foundry for both games. please look at the pics full screen, yea zelda does grass better, because the game is based around a forest, gtav does everything else better.

If the Wii U is more powerful than the 360/PS3, I don’t see why it can’t run GTA V. I guess the only problem would be that apparently Wii U was complicated to make games for.

Wii U has a weaker CPU, and The GPU is about the same, maybe slightly more powerful, RAM is the major advantage, 512mb more.

You'll need to substantiate a few of these statements with some details.  

GTAV (like all city-based sandboxes with many people walking about) cuts quite a few corners when it comes to "simulations". The AI, like in every other game, is just varying complexities of conditional statements prescribing a small subset of pseudo-random scripted paths, much of the heavy computational work doesn't occur until you interact with them. So sure, there are many dozens of people on the screen, but the five to ten you're interacting with are taking up more of the computational work than all of the others walking about their scripts in the background. Breath of the Wild's analog to this is its wildlife (foxes, fish, birds, etc.) So really the bulk of computations for both games (GTA and BoTW) are being produced by the immediate enemies and persons with whom you interact. The question then is, how taxing are the individual interactions themselves?

Where the heavy computational work comes about is in things like dynamic weather, car collisions, fire, explosions, particle effects, magnetism, kinematic approximations, dynamic approximations, etc.  There is nothing quite spectactular about GTA V's implementation of these things, and it's not as if BoTW doesn't have a dynamic physics or weather system of its own. In fact, in many ways there are more things happening in BoTW at once in certain circumstances (such a dynamic system of wind, combined with simulated fire, and its effects on nearby enemies during combat while calculating the kinematics and dynamics of the physical interactions between enemies.) 

One of the more taxing intersection of simulations in the Wii U version of Breath of the Wild is using the fire rod to burn grass while the dynamic wind system blows (see: below.) 

compare it to GTA V's implementation 

Shading and lighting-wise Breath of the Wild is definitely a level above GTA V (on 360) in most circumstances.

Image-quality wise they are the same, both 720p titles with post-processing anti-aliasing, both have crappy texture filtering. 

In terms of texture-quality the games are comparable too. 

The Wii U probably would have no problems handling GTAV, in some situations better and in others worse depending on whether or not the specific technical feature is CPU-bottlenecked or memory-bottlenecked. On the other-hand, due to memory limitations I don't think the PS360 can run Breath of the Wild without large concessions. That was the major bottleneck for even the Wii U version of the game.