Ran'ji > WoD + Oracle of Light + Scorn!?

[Nalien]

The problem with this line of logic is that the Eulmorean Army that has been fighting Sin Eaters for decades and thus should be stronger than Ran'ji. Instead none of the Eulmorean Army come close to Ran'ji, along with any in the Crystalium Army (also been fighting Sin Eaters for decades).

I think there is a pretty huge difference between leading an army, and being a (frankly) entirely disposable foot soldier... Most who fight Sin Eaters die, we saw that plenty throughout the story. Those that continue to survive do so because they're stronger, and Ran'jit was pretty much at the peak of that little notion. Just because they've been fighting Sin Eaters for decades doesn't mean everyone in their army has been, the vast majority die and are replaced, grim as that might be. As far as I'm aware Ran'jit was the only character noted for serving as long as he had in all of Norvrandt... Seems he also had an oddly long lifetime as well, from what I can gather (since he trained plenty of Minfilias, although I guess they might have a high turn over rate), which only adds to his power level in a fantasy setting...