I know difficulty is subjective, but what's ironic is that the high DPS jobs like BLM and somewhat SAM and MCH aren't actually difficult to play. Can't say much about MNK since I don't really play it, but I've been told it's easier, especially with the 5.05 changes giving it basically 50% uptime on ignoring positionals. If DPS was balanced around difficulty, NIN and SMN would be on top since they require the most effort out of every DPS right now, and yet they're at the bottom.

Even the devs have explained that they don't balance like that.