You know what’s really funny (well, made me laugh anyways!) about that statement is the engine masters 383 vs 383 where the short stroke produced more torque than the long stroke engine earlier on in the pull.
Cause probably the longer runners cause by the width of the engine plus it's not stroke but the displacement that makes torque , the 383 mopar has a bigger piston with more surface area of pressure pushing down but less multiping effect from shorter stroke the Chev has the opposite thing going on, equalling it out.