Erg it's not that clear cut....

I really don't want to do the maths on it so i'll try and keep it basic...

Mobs gain (Base TP + 3)*(subtle blow mod)

It's the +3 that is the reason that MNKs DNCs NINs need subtle blow otherwise mobs would gain crazy tp.

Also jobs that use two handed weapons and store tp to get certain hit build feed the lowest amount of tp to a mob per 100tp.

RNG is pretty much the same too.

Any comparing DD for feeding tp is really dumb since there all really close when you work it out for how much tp you feed to a mob every 100 tp.

Either way it's more to do with how many DDs u have on mob than what the DDs.
And it depends a hell of alot more on how much haste/snapshot/rapid shot a DD has on than what job it is.