That cryptic illustration proves nothing. I wouild have to see how much deck each example had forward and some sections thru the area.
If you drop the "weave piercing (which I doubt) bow and just use a straight stem i.e. plumb stem, you can flare the deck out more and gain a lot of volume.
No, for a given LOA, as measured in the standard method, you DO NOT get more volume forward with a wave piercing bow. You get less and that is the whole point of the shape.
I've been drawing reverse bows for years.