usually the other way round i think. if the arrow stays on the string for a shorter period of time (which ain't that long to begin with) then there will be less time for human error ie dropped/moving bow arm. also a quicker arrow helps compensate for distance/arrow drop. flatter shooting in other words seems to be more forgiving,,,i think. brace height helps here too,,, higher means less time on the string. the most forgiving bow for anyone would be one that FITS that person and their style of shooting. GRIP IS KEY.