^ The only ones making handheld games are the japanese, all the western devs left after the 3DS/Vita's first year on the market
As for the Vita, retail wise, its not moving much. Again the only vita worth having is a Japanese one, if you really gotta play your realistic racer on you're handheld(go play it on a console)
(The 3DS has 4 of those anyway, 3 of them suck .-.)