Some Mason owners have class!
We will overlook that comment. The wetted area argument is correct for the initial swell in that the Mason doesn't lift it's stern as quickly as other boats. In a very large swell it was my understanding that the balance between the reserve buoyancy between the front and aft is a key factor to stability.
There were comments from Brewer on this in net posting some time ago. If I find the link I'll send it.