RE: Axle to Axle length and Brace Height?
I do not think we can make positive claims about any bow characteristic in regards to "which is better". It is safe to say that just about everybody will shoot a bow differently. Therefore I think it can be concluded that longer axle length (for example) will work great for one person but not quite so well for another. Likewise one person might find shooting a short brace height more pleasing than the next guy.
I do however believe we can make generalizations based on common knowledge and facts. Longer brace height is generally more forgiving but will have slower arrow speed. Longer ATA is generally easier on those who use fingers rather than a release due to less string pinch but can be tougher to maneuver in the woods.
-Mike