As much as I like the idea, its hard to make tiers when some compositions just have an overall better synergy thus being more efficient in the end. For example, I do agree MNK is a better melee job overall on pvp, he pretty versatile has a good chunk of defensive skills, one ilm punch can remove a lot of important buffs and good damage overall. But a DRG can improve a physical ranged partner's damage while having one of the best bursts together with it. Other example is how Noct AST's weakness is to heal multiple targets at once that can be covered up by a PLD who has amazing aoe protective skills and Clemency. So if we decide to actually put a tier list together we should think on what a job can do alone on pvp and I think this list that our Cynric friend made doesn't get too far from the solo pvp potential of each job. I'd only put MCH a bit higher on the list. I find them annoying to deal with.