Euron repeatedly pops up to even the odds, bearing weapons we didn’t know existed (except in a far less effective form). Dany “forgot about” his fleet, which she was warned about in the previous scene. (We have ample evidence that Jon, while brave and skilled at swordplay, is legitimately bad at battle strategy, but someone should be better at this.) Those legendary dragons are easy fodder for projectiles, and Dany doesn’t hold off on her strafing run until nighttime or simply circle around from the stern. Cersei, never one to be bound by propriety, passes up a chance to take a shot at Dany (or at the very least, her hand) instead of beheading the dragon queen’s personal assistant. And Euron doesn’t react when Tyrion announces that he knows about the baby Euron believes to be his son.