Nintendo was focusing on the 3DS at the time. They prioritised making sure PSVita was dead on arrival by releasing Mario Kart 7 (which sold 8mill) and Mario 3D Land(which sold another 9 mill) at the same time as PSV was released. They also moneyhatted Capcom for Monster Hunter exclusivity and released that to basically destroy any momentum PSVita might have had. I say that was a wise decision considering their limited resources.
The only "Limited Resources" that they have is "Limited" because of an incompetent marketing department. When Far Cry 3 was going to come out, they had commercials, 90 second long trailers, Youtube advertisements. But with Wii-U, all they have is some guy speaking broken english showing gameplay during a 25 minute long video.
I can honestly say, if you look at profit margins, sales numbers, and market share value. The USA companies are beating the living shit out of Japanese publishers. Look at Capcom, such incompetence, they screwed up DMC so they won't even have a sequel, they ruined SFxTekken's image with the fans by trying to jump over dollars for pennies, they disbanded a bunch of their development teams due to a lack of sales, and they released a crap beta version for MvC3 which then the sequel didn't even sell 33% as well because fans were pissed! What a bunch of epic failures....
I know it's off topic to bash Nintendo, but this topic just got me thinking, why is Nintendo so incompetent that they couldn't even support a game system to play games like Soul Calibur 5, or online support? Not to mention how TERRIBLE the Wii was, they couldn't even give you game updates, you had to go online and physically download them. They even sometimes released console glitches updating the FIRMware by encoding them onto discs like Marior Bros RE: such so if you had a modded Wii, it would lock up your Wii making it unplayable for any other game.
Developers creating purposefully malicious glitches to break your console if it's modded? Yeah.... enough said in one sentence. Lol! Good way to deal with modders, break their consoles they paid money for.