To be fair: since we don't know anything factual about this event, you could film 3 space aliens engaging a brown turnip in debate whilst it is suspended over a dunk tank of boiling water and claim that it is just an accurate depiction of Christ's execution.
Personally, I watched about 20 minutes of Mel's anti-semitic tirade and changed the channel. Shame, because Mel has made some awesome flicks. Personally, I see no value in defining Christ by the way he died rather than the way he lived. The craziest and most deplorable of Christians seem to put great value in this part of the story, in my experience, and it always makes me wonder.