I have only an 8 speed cassette with my triple. In spite of that, when I compare our two drive trains I come up with 16 useable different gear ratios on my bike, compared with 14 on yours. That's not even considering the less than useful 50-11 on yours compared to my 48-12, or the fact that a triple has a much more comfortable transition between chainrings, and operates most of the time as a double.