I don't think thats a fair assertion. Jewish communities, AND the rise of antisemitism are very prevalent in Vicky.
To be completely honest, to say that Jewish states had any sort of relevant role in the CK2 time period is a bit of an overstatement.
I didnt extensively play EU:Rome so I cant say how well they were represented in that game, which is the period of time I would assume that the Jews should be spotlighted.
We've been saying Khazaria all over this thread. Did you even bother to look up Khazaria? In Rome the Jews just had a tiny kingdom in Israel under the Maccabees, in CK2 during the Old Gods they had a huge empire in the steppe. Which is more relevant- empire or little kingdom?