I cannot say that there is any advantage or that one is better than the other. It depends on what you you like, or are use to, most comfortable using etc. As to which shoots faster... That also depends on a variety of factors FF string, "skinny string", or Dacron? Optimum draw length, your D L, weight of arrows, the poundage of the bow heavy weight, medium weight or light weight.
Personally speed is a non-factor to me, accuracy is the be all and end all as Wild Bill Hickock used to say "speed is fine but accuracy is final"