A7M Reppu interception and the problem of availability

Could the A7M Reppu intercept a B-29?

Yes in the comparison, provided aircraft were available; the response questions whether enough were ever produced.

The A7M Reppu is accepted as capable of intercepting a B-29 in the hypothetical comparison. The qualification is the recollection that too few were produced to provide the required force. Interception depends on having aircraft available at the necessary place and time.