Rob,
I agree with you that the Morrison bows are fast but are they advertised as such, does Bob post bow speeds, you know the answer, no he doesn't. Go to most compound bow sites and the first thing they hit you with is speed. It's as if speed alone is all you need. The value of a few fps does help with range estimation, with some people. Consider this, most on this site have a number of bows on their rack, does anyone adjust their form in any way to shoot them. I would say they probably vary in speeds, doesn't mean we change an aspect of our form.
I can't tell you how many times I'm approached at the range on what speed am I shooting, very rarely do I get any other question. The only other question I get is how do I hit the bullseye without a sight. Ugh.