I've been doing pretty much all dungeons on elite because I like a challenge and it gives me extra loot. But just how much extra loot does it really give me? For instance; right now I'm trying to get a full set of t3 gear, which requires Advanced Orbs of Alchemy. Does going on elite make my orbs have a higher chance to get elite/eternal, thereby less a chance for advanced? Also, what of bosses? If I was to do the robot bosses on normal/advanced for less difficulty, would they give me less tokens? Are Elite bosses balanced for people in 5-star gear only, or does a 2-3star team stand a decent chance? And if I was to go to a lesser difficulty, would Flame drops more likely be of lesser caliber than Glowing, which is what I'm in need of at the moment?
I haven't seen any data on this, but I'm going to go out on a limb and guess that Lancer Knightz is measuring it. You might want to contact them and collect some data together.