That's because there are no japanese games out for the system. Developers are sticking with ps3/vita because it has a bigger install base and it's cheaper to make games for it. Only reason vita is picking up steam there is because the psp has been discontinued.
Beats sound like shit, especially if you listen to other genre's music besides hip-hop.
Klipsch S4i are some of the best earbuds I've used. You cats listening to music through 10 buck family dollar discounts are missing out. Spend a little bit more and listening to music will be a totally different experience.