PSN really is a freak show for the Vita with ancient games mixing it up with the new stuff. Without any sales numbers, it makes little sense, but Sony doesn't want to let on how few or many any games actually shifts.
What it does prove is that Vita owners would love more first person shooters and a GTA game! Your call Sony and Rockstar! Good to see Severed getting plenty of respect!
Over on the US store:
Digimon Story Cyber Sleuth
Dragon Ball Z: Battle of Z
Hitman Go: Definitive Edition
PlayStation All-Stars Battle Royale
Meanwhile on the EU store, sales seem to have distorted things slightly.
Grand Theft Auto: Vice City Stories
Need for Speed Most Wanted
The Ratchet & Clank Trilogy
GTA: Liberty City Stories
Persona 4 Golden
Table Top Racing
God of War Collection