- In Luke and in proto-Luke (== the Evangelion of Marcion) Jesus says a lot of times : "Father" (implicitly alluding to himself as "Son")without no problem in doing so.
- In Mark, Jesus says "Father" only 4 times:
8:38, 11:25, 13:32, 14:36.
Mark 14:36 has "Father" neutralized by "Abba".
...is too much reminiscient of Mark 14:62, of which there is reason to doubt as original in Mark (as the entire Passion Story).
here the Father is not connected with only one Son but with any people.
A possible solution of the dilemma is that the relation too much intimate between the Son and his Father was embarrassingly too much marcionite for "Mark" (author).
Add to this the fact that "Jesus The Son of Father" is defamed as the bastard "Bar-Abbas", and you have a very good reason to accuse Mark of anti-marcionism.