As I said on another forum, I can't accept the new 19 being stronger than an L or N.

It may depend on what he refers to.
If strictly the forcing cone, possibly.
If the entire guns as a broad statement, I am not convinced.

As far as MIMs go, I talked to him about 'em for a few minutes at SHOT years ago.
He said one thing in their favor is the MIMs are easier to do an action job on.
Denis