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No 3rd party in the world would want to port a PS4 game to Wii U. Not because of RAM, but because of the PPC Architecture. x86 on the PS4 brings a lot of advantages for developers (for example free choice between DirectX, OpenGL or Low Level Mode. Especially Indies can port their PC games with little to no effort.). PPC on the Wii U only brings problems. Sure, Wii software is running and everyone who developes for the Wii will instantly feel at home. But who the hell developed for the Wii, seriously?
That said, you can in fact bring anything on a platform with less RAM. You just have to scale it down a little and live with longer loading times. Think about it this way: The same game can run on Wii U with constantly streaming data from the disc (unfortunately, it isn't possible to make a swap drive on an internal hard drive as Nintendo didn't include a hard drive in the Wii U. Much bigger issue than RAM if you ask me.) while the PS4 can fit the entire game into the RAM. That would mean no loading times at all.
The differences will be very noticeable, but who thought otherwise? It will however be possible to port almost every game to Wii U with less graphics or a lot of loading screens when it comes to Open World. (Lego City comes to mind. Those Loading times are INSANE!). But I doubt that many developers will want to port games to Wii U as virtually every 3rd party game tanked even considering the install base. (Call of Duty and Assassin's Creed bot sold nearly twice as much on Vita). It just isn't worth all the time and money.
Official member of VGC's Nintendo family, approved by the one and only RolStoppable. I feel honored.
