Ummmmmmm, A.D. is not After Death. Else what would we call the years he was alive? A.D. is Anno Domini = Year [of our] Lord.
I was disputing your opinion as to when the dating system should have started., i.e. using his death as a time line to the Ascension as to when you think the calender should start vs. his birth, A.D.
When I goof, I do it well. LOL