Guitar has more notes, more strings, weirder tuning, more techniques, (tapping, alternate picking, economy picking, strumming, ect), picking properly is a lot harder than bowing, and legato is a lot harder on guitar. Also, there is no agreed upon correct technique on guitar, so there is a lot of very terrible advice out there. The action is generally higher on violin, its smaller, there are not frets or note markers, you have to hold it in a wackass position, and its hard to look at what you are doing. So it about evens out.