Originally Posted by
cyccommute
Since when? Yes, Shimano changed the pull ratio on their mountain bike derailers so that they don't work with road stuff any more but, as far as I know, the pull ratio hasn't changed on road derailers. At least no one has mentioned it here.
Since Shimano introduced 11 speed for road, pull ratio for both front and rear derailleurs was changed. Dura Ace 9000 was introduced 3 years ago