I often read that road bike triple rings and their derailleurs are difficult to set up and clunky in operation. I've never had a problem with a hybrid 3x8 on any of my bikes, even a base level bike bought twenty years ago, and general comment seems to be that these kinds of triples are fine and work well. So what is the difference between the groupsets? Or is it down to the bike geometry being different, i.e. road bikes are more compact so there's less tolerance in the drivetrain?