I hope this is a masterful troll thread.
Technical reasons are about the last reason why Vita is struggling. What takes space in games is, overwhemingly, cutscenes. Textures and music are small, and game code is tiny.
The reason for the symptoms listed is all developers lacking a) money and b) talent to do a full Vita production because, at $50, handheld games don't sell enough to justify console-scale development and those resources are therefore devoted to console productions.
Development priority for third party games right now looks like: 360>PS3>Future MS/Sony>3DS>Wii U>PSV>DS>Wii. And for good reason. On purely economic grounds, if a spinoff Vita version is coming out at the same time as a major IP release on other platforms, it's going to be lacklustre.
