Which is the better protocol overall based on the current information?
Do you have any sources for that? I’ve seen no indication they don’t intend to release the protocol as a standard and that is a pretty big assumption
Nope, I’ve seen nothing firm about them doing or not doing it, but OP asked about current information and at the moment they are open source and do not have a standards document.
As it stands I wouldn’t jump on AT for a project of mine and wouldn’t recommend it as a superior protocol on those grounds.