I know YTDs are a bit meaningless with only 2 weeks of sales for 2014, but Vita has sold 107k YTD according to MC, compared to 44k in 2013. That's a 63k advantage which is basically enough to absorb one of the price cut / Soul Sacrifice weeks already, just shows how important FFX has been for maintaining momentum
Hopefully it continues and Vita does even better this year than in 2013. Given the games its getting, particularly Phantasy Star Nova, I'm confident it'll improve (though is that definitely coming in 2014?)