Nope, it wont get close to 2mil. In japan the sales were both 1.1mil in 2013+2014, the games you mentioned wont push vita passed 1mil this year (Saga+Digimon are the only real system sellers i see as of now) in japan. 2013 had Price Cut with huge games (for the system) and 2014 started really strong, but fell apart during Q4.
Vita will do 700k-900k this year (japan). PS4 will hurt sales overall especially with all the big games coming in for it. As for the games you mentioned...
SAO: Already had one
Persona: Just a dancing game
GE: Ok this will give a nice boost but nothing compared to GE first release which had vita tv launch+holiday boost beside it.
One Piece: Its on PS4/PS3
Digimon: Could push the system, but im not that confident (i just hope the game does well tbh)
Star Ocean: No Comment
Saga: This will push systems, guaranteed
Toukiden: Already had 2 games released.
Isn't Hatsume Miku also just a dance game? Given the game is also coming with a limited edition Vita and a Persona 5 bluray disc I think it will definitely move systems.
Also I never said japan will give it 2m, I said japan and asia (including china launch), will garuntee 2m in response to the 2:1 ratio Ryng Tolu expects WIi U to outsell Vita. Wii U will have to sell a above 4m this year for it to achieve that.
Chinese market is dominated by mmo games does Vita have any of them,Most of vita games are niche games i t won't help vita in China too.
I can't see more then 500k for the first year in China