FATE experience rate comparison

[Gamemako]

I've seen a lot of fuzzy claims of late which amount to this-or-that is faster experience gain than FATEs, but there's never any data (or even rudimentary calculations) to back it up. Naturally, I decided to head out and test it myself. I ran two tests at the same level: WAR at level 46 in a Dzemael Darkhold and DRG at level 46 in Northern Thanalan. Because WAR was my highest-leveled battle class, I decided to simulate the +50% level bonus by having Rested EXP for the duration. This is identical in effect, offering +50% to all combat EXP and being additive with other bonuses (food, chain bonuses, etc). I ensured that there was no starting rested bonus for DRG.

Dzemael Darkhold:
Time elapsed: 43 minutes
Experience earned: 92641
Approximate XP rate: 2154/min
Starting screenshot:

Ending screenshot:

Northern Thanalan FATE party:
Time elapsed: 48 minutes
Experience earned: 348885
Approximate XP rate: 7268/min
Starting screenshot:

Ending screenshot:

Ratio of FATE XP rate to dungeon XP rate: 3.37:1

You can take this how you will. I aim only to enlighten the debate a bit with data rather than speculation. Feel free to repeat the test yourself. I do not know whether the ratio grows, shrinks, or remains constant with character level.

A few comments:
-The Dzemael Darkhold run was done with random players through the Duty Finder. It was one of the better parties I've led through the dungeon, though I can imagine a well-coordinated static group could complete it much more quickly. I do not believe that is a relevant consideration, however; static groups during leveling are fairly difficult to organize as players will out-level one another.
-I didn't think much of starting the test during the middle of Dark Devices, which spawns about every hour. I had intended to do a full hour to compare. Unfortunately, FATE experience gain was too great, and I had already leveled before the hour was up.
-I do have another screenshot taken 13 minutes after the FATE completion one. I decided not to use it due to being over the intended level 46 interval. In the intervening 13 minutes, I acquired an additional 84383 experience, for an experience gain rate of 6491. This would reinforce the previous findings, but it is not as reliable on its own and isn't apples-to-apples with the Dzemael Darkhold test.