GTA IV was probably never designed to be released on the PC whereas Assassins Creed was. I guess the same applies to many of the big Japanese games so perhaps that is the major factor as to whether the Wii U CPU is considered slow or adequate. In a console focused design a game will likely make extensive use of vector code whenever possible whereas the Wii U CPU likely doesn't have strong vector units. GTA IV runs like complete arse on a PC as testament to this fact.

GTA V is not even in the planning phase for Wii U right about now. It won't come, and if it ever comes it will be years from now.

Then maybe what I've said doesn't apply to you, since you are not part of the market for this game. My stance can be summed up as "if you are interested in this game and have the money for it, I suggest taking any action you can to make it happen". If you want to sign a petiton regardless of your level of interest or intent to purchase the game, go right ahead. It wouldn't hurt the cause. However, I'm here to point out that for Wii U owners who are in this market (no matter the current size), signing a petition is probably the least they can do to contribute.

Thankfully, Rockstar is apparently considering a Wii U version of GTAV. So I'm going to go out on a limb and say that if Rockstar doesn't release GTAV on Wii U, it isn't because of bias (not assuming you would think that, but someone will).

@bold. I agree.

What troubles me is that Rockstar has not even announced a PC version. I don't understand why not, since it would likely sell very well. And given how far ahead PCs are compared to consoles these days, I don't see why Rockstar can't make a good PC version  of GTAV (compared to GTAIV's PC version). No wonder PC gamers complain about consoles holding them back...

...and ultimately, I just hope those people would not treat petitions as the be-all, end-all solution. Because if GTAV doesn't appear on Wii U, I will (as always) blame everyone and everything involved. There are no sacred cows when I point my fingers.

The melee combat is not innovative at all. Sleeping Dogs was planned as a True Crime sequel and extensive melee combat has always been the main focus of that series (besides driving cars). GTA is more about guns, TC about martial arts.

Environmental takedowns are not new to gaming either, but at least they don't fall into the generic gameplay category just yet. Though I'd still say that this feature is not fully developed.

You should play mafia.

You don't need to be concerned at all. That's how Rockstar does it everytime with GTA.
Though selling well would be relative. At least nowhere near the console versions.

Also Rockstar is known to make below average PC ports most of the time. GTA III had huge performance issues, GTA IV still has after several patches and the same is likely to happen with GTA V, unless they would give it more time than only ~6 months.

Also the "And given how far ahead PCs are compared to consoles these days" part is irrelevant. If a decent PC can't properly run GTA IV now it won't be able to properly run GTA V either (assuming the port quality is equal).

I suspect they're trying to eke every ounce of performance from the console to run their simulation and to do that they need to leverage every advantage they have. Before the Core iX 3xxx series vector performance was pretty bad on desktop CPUs. AVX really makes a big difference to this kind of vectorised code which both the Xbox 360 and PS3 CPUs excel at.