Ouch, I know it did a lot of pre-orders, but Sony's last major Vita game (probably) Freedom Wars (see the review scores for the game) couldn't stick to the top of the Vita chart for longer than a week, even with its thorny appendage. It is already down to No. 3 behind Killzone and FIFA. That's why no one is developing for Vita in a big way!
Did any other console (except a Nintendo) have a launch game, Uncharted, in the top five nearly three years after launch?
FIFA 15 EA SPORTS 2 7
2 KILLZONE: MERCENARY SONY COMPUTER ENT. 3 62
3 FREEDOM WARS SONY COMPUTER ENT. 1 2
4 UNCHARTED: GOLDEN ABYSS SONY COMPUTER ENT. 6 137
5 FINAL FANTASY X/X-2 HD REMASTER SQUARE 4 34
The only other new entry was Muppet Movie Adventures at No. 20 suggesting that even kids aren't buying Vita games. With Batman and Minecraft out this and next week, after that it's pure Japanese on the schedule, at which point even having a Vita chart remains pretty much useless.