6 vita skus are currently charting on COMG. Before IS 2: Ignition Hearts leaves on Feb 27, 6 other games will leave the list. The question becomes how many vita games will be on the chart on February 26th.
(Note I only put the titles releasing Feb 27- March that I believe have a shot to chart by Feb 26)
PS4:
March 19: Natural Doctrine
PS3:
Feb 27: IS 2:IH regular version
Deception IV LE and regular version
March 6: Ar no Surge
March 19/20: J Stars Victory VS
Natural Doctrine
Motto! Sonicomi
March 27: Yaiba: Ninja Gaiden Z
3DS:
Feb 27: Fossil Fighters: Derm Gen Gear
March 6: Doraemon Shin Nobita
March 20: Mario Party: Island tour
Hero Bank
Game Center CX: 3-Choume no Arino
March 27: New Love Plus +
PSVita:
Feb 27: Deception 4 LE and regular version
March 6: Soul Sacrifice Delta
March 19/20: J Stars Victory vs
Natural Doctrine
PSO Episode 2
Samurai Warrior 4
March 27: Atilier Plus twilight
Hatsune Miku Project Diva 2nd LE
Hakuouki SSL ~ sweet school life
Ryo Kyu Bu!
Also April 10th 3rd Super Robot wars Z will launch with a limited physical release on vita.
I think Soul Sacrifice Delta is a given to jump on the chart, and think the Vita could add 1 or 2 more between Miku LE, Deception 4, Samurai Warriors 4, and the Super Robot Wars limited edition giving the vita 8-9 titles on COMG at one time.