They both have pretty good line ups but a few of the 3DS games you listed may not even come out in the west. Where as Vita on the other hand has these great games confirmed coming to the west:
Steins;Gate - August 31st
DanganRonpa: Another Episode - September 1st
Persona 4 Dancing All Night - September 29th
Corpse Party: Blood Drive - October 13th
Legend of Heroes: Trials of Cold Steel - November 17th
Sword Art Online: Lost Song - TBA 2015
Digimon Cyber Sleuth - TBA 2016
Legend of Heroes: Trials of Cold Steel 2 - TBA 2016
Zero Escape 3 - TBA 2016
World of Final Fantasy - TBA 2016
Plus all the other smaller titles like Lost Dimension, Dungeon Travelers 2, EDF 2, Senran Kagura, etc. Now if I add unconfirmed Japanese games the list would be even longer.
