Albie has the best track record, in-terms of total tonnage sunk, of any of the US subs in WWII. So she probably knows some ways to increase her accuracy. And, while Archie really only has the Shinano (and a few possible minor sunk targets), in-terms of tonnage sunk, she's had a while as a kanmusu to potentially learn from Albie and hone her technique. So I expect their accuracy would be higher than average.
And, of course, the Japanese torpedoes were the best deployed during the war. And that's what the majority of subs hunting Bismarck would be packing.