Is Ubisoft’s upcoming portable side story the best PS Vita game to date? Well, I’m not (that) psychic, but it sure looks like a prime contender. Check out this latest behind the scenes look at what’s definitely a game worth playing on Sony’s handheld. The system may be struggling a bit these days, but this could be one of those titles that becomes a system seller, killer app, must-play and so forth and so on. Hey, all that hard work here HAS to get some appreciation, I say…