[BowStreetRunner]

I really don't see this as a dilemma, just a matter of perspective. Our party has a bard who puts up dragonfire inspiration during most serious battles. When that goes off on my TWF character, I can end up clearing whole swathes of enemies from the board quite easily. I know better than to take credit for this myself however. We all give the Bard his due, and recognize him as doing the heavy damage-dealing when DI is up.

Do you think it would be a reasonable idea for him to put his DI up on just the wizard, cleric and the power-attack fighter and not use it on my character because that would make me too OP? My party is actually quite content to use tactics like this.

In your case, the use of the White Raven Tactics is the kind of thing a buffer does, and the extra kills the charger pulls off that he wouldn't get without the buffer should be recognized as also part of the buffer's contribution to the party.