ORIGINAL: Straightarrow
A buddy of mine just got back from a buffalo (bison) hunt. He took a 1300 lb bull, shooting a 58 lb compound and a 600+ grain arrow. It took 2 shots to bring it down. Both were complete passthroughs in the ribcage. He wasn't worried about arrow speed and I'll guarantee you he has no clue what KE is. He knows how to take down large animals and what makes a good hunting arrow.
So he's no where near your average Joe. What about theaverage Joes that make up most of the hunting industry, how much help do they need?
I'd say speed would be a big advantagefor them on smaller more reactive animals like a whitetail.