Jesus Brian, that is quite a post
I don't know both boats to make a comment, except in what regards design. The Catalina hull seems to be a more modern one, at least on what concerns the stern. There are a thread that explains why modern boats have broader sterns and why they are a better option (and that does not mean necessarily beamier boats).
The Sabre hull design looks like a 15 or 20 year's old European design.
Comparing with Jeanneaus, Beneteaus and Bavarias, both has no, or very small bulbs while modern European boats have almost all its keel weight on a big bulb on the Keel bottom. For having the same righting moment of a bulbed keel in a keel without bulb a given boat has to have many more hundredths of Kgs to compensate. This results on an heavier boat needing a bigger Ballast/Displacement ratio for the same effect and in a slower boat.