Some bows are most definitely faster than others. My Grooves Spitfire that is around 45 at my draw will out shoot a number of other bows as much as 10 pounds heavier that I compared it to shooting the same arrow. the other part of that is that Grooves prefers to shoot the same arrow as bows ten pounds heavier as well. Today, if one wants to shoot a lighter bow, there are numerous high performance options that were not around before. however, when I was a teenager in the 60s my 55 pound Pearson was the stiffer than the others bows. Most of them were shooting 45 pounds.