Considering I witnessed a Forge bow with a 8 1/2" brace height set at 57 lbs shoot 303 fps I wouldn' t be so quick to chalk it up to b.s.! That was our proshop owners son tweaking his bow for a tournament. I' d venture to guess that with a speedburner like a bowtech , it would be easily done.
Can you say 3 or 4 grains per pound of draw