The A1 designation on the run out indicates the stamper that was in use, A1 in this case, we'd expect to be the very first mother and stamper.
So they 'should' sound identical if they are both brand new and just out of the wrapper. Should, doesn't mean they will, there could be a whole plethora of reasons why not. One could have been stored over temperature, one could have been stamped just before they found a fault in the steam line at the press.
Kuzma Stabi/S 12", (LP12-bastard) DC motor and optical tacho psu, Benz LP, Paradise (phonostage). MB-Pro, Brooklyn dac and psu, Bruno Putzeys balanced pre, mod86p dual mono amps, Yamaha NS1000m