On the other hand, the whole purpose of this topic (as far as I can tell) was to lay down the gauntlet and effectively say, "Well, what is
different or inconsistent?"
It was never assumed that answers to those questions would be found. To that end, I think it's fine to point out those potential differences, since that's what Robert asked for... but pushing for why the/a Mahavihara interpretation is incorrect would not be appropriate in this forum.
It's a fine line, and I think people are doing a decent job of maintaining appropriate balance.
“I hope, Anuruddha, that you are all living in concord, with mutual appreciation, without disputing, blending like milk and water, viewing each other with kindly eyes.” (MN 31)
What is the final conviction that comes when radical attention is razor-edge sharp? That the object of the mind is mind-made (manomaya). (Ven. Ñāṇananda)
"If you have always believed that everyone should play by the same rules and be judged by the same standards, that would have gotten you labeled a radical 50 years ago, a liberal 25 years ago and a racist today." (Thomas Sowell)