RE: theory of mine...opinions?
I polled a similar question before, which was pass through completely? or arrow left in? overwhelmingly the guys said a pass through.....for a blood trail...and just better kill.
However, a guy I know, and another guy in camp at the time agreed that they preferred an arrow to remain in the animal causing much more damage by the broadhead as it ran away....
I think most of us agree the 1/4 away is a great shot, as is the broadside. I guess this is what you're stating that the 1/4 away is better than a broadside.
I think it is a great shot, in some sense you can sneak it in behind the rib cage. I think the broadside is probably a higher chance for a passthrough. Both are great, don't think you can go wrong with either method.