PS Vita Reviews just finished playing the English/Asia version of Sword Art Online: Lost Song. Here are their final thoughts:
"Sword Art Online: Lost Song is the newest game based on the VRMMO anime series. On the downside, the camera can be troublesome and there are occasional frame drops in dungeons. Outside of this is a fun Action RPG with a lot to do, fully functional online multiplayer, and a translation far superior to its predecessor."