Obviously the nearly year long raids over Japan in 29s were insignificant (Sarcasm). The incendiary bombings implemented by Curt Le May accounted for a significantly higher percentage of destruction on the Japanese homeland than anything else we threw at them; (Excepting perhaps the Submarine "Silent Service" sinking of a phenomenal amount of tonnage in food and materiel, not to mention the "Marus" that were required to get Japan the supplies it needed).
I might also add that the Japanese developed no less than 3 interceptors to deal with the B-29 Threat.
Although, the B-29 was never my first choice, and I can think of planes I would rather have, the B-29 has earned as much of a place in this game as any other plane in the AH lineup.