what was the RN Destroyer commander's name again? Commander Vain or some such? If the OTL DD attacks didn't sink the Bismarck, why would these others succeed? What was the name of the RN Cruiser that torpedoed the Bismarck in OTL, the Dorsetchire or something? Now the Suffolk is going to succeed where the OTL ship failed?
All sarcastic jokes aside, you know perfectly well what actually sank the Bismarck, see
@hipper post above.
The way I see this is, the redo leaves the Germans knowing they cannot continue their sortie, and thus they turn back. Given that the only reason the RN even got a second chance, was because the
German admiral broke radio silence and gave away his position, I think it more likely that history repeats itself, and the battle doesn't go according to either nations plans.