Exp Formula Returning Back To Normal?

Is that really so difficult to even do half as much damage as an equal level attacker?

It's all dependent on the attacking partner and their DPS... and most of the time for me, while I might have half their attacking power, they can attack faster.

So... for a legit blood lukless priest that needs to party, I'm kinda screwed here. :/ I do my part and try obviously, but it's not enough sometimes.