[focusaurus]

Other factors probably at play: Obj-C MUCH older. CoffeeScript designed to be simple and have fewer "bad parts" thus fewer questions. Many problems faced while coding CoffeeScript are actually javascript or DOM or Web questions so you don't tag them with CoffeeScript. StackOverflow isn't overly loving of CoffeeScript, so I often ask my questions using JavaScript even if my source is really CoffeeScript (and again the questions aren't really about CoffeeScript but usually about JavaScript).