You leave religion out of this.
The Ki-45 had the armaments to take down the B-29, however, it was not successful at high alts above 25 k.
Japan developed two jet planes to go up against the B29, if I remember correctly but itwas already too late. ied forces had one advantage over axis. Axis lost planes/gvs forever, allies would replaces loses at 4 or 5 times.Semp