Calling it now: you are all wrong.
Most likely this poster was made before they decided to change Julius into Victor, which supports what leak guy said, I believe. Also, Cox said he didn't want to use elements from IGA's timeline anymore, so I have a hard time believing they would use him. Besides, if he really was in the game, they would have revealed him first in order to appeal to all the fanboys.
Pretty sure Victor is also from the past since he fights young Gabula, instead of his older incarnation.