Any forgiveness advantage of the MC over the new MB? From your numbers it would seem not. Also where are you at with the MMT?
Heck yeah there is!
There's a decent size difference between them. The MBs are seriously compact. And the MC is still a muscle cavity, so it has some benefit of perimeter weighting. The MCs are a very small cavity iron, but in terms of playability they are definitely still a little different than the blades.