After a first approach on this subject I got stuck on stockpile of BS coming from Jews claiming Marcionism to be antisemitic and putted it aside and even forget its name, until today when PsiCop finally remembered me of such.
However on this second sight I decided to look a bit further using my own judgment, I haven't find much yet, I'm just starting to this "new ancient World" and as so I used wikipedia as first destination:
http://en.wikipedia.org/wiki/Marcionism
Under my view those claims of antisemitism just come from radical Jews who wants their Yahweh to be "the only God" no matter what and no matter how incoherent it makes Christianity. Even so, the Marcionism antisemitism can't be compared to Nazism, since by itself Marcionism preaches no hate or kill of anybody, it simply denies any relevance of the "Hebrew Bible" on Christianity.
Can it be the third way of Christianity?