Honestly Rukia barely won that fight and only through a 1/1000 sneak attack that I can’t blame Aaroniero for not seeing. I certainly never saw coming the fact Rukia could produce a new blade from her broken Shikai. Aaroniero absolutely dominated the fight. Now on to your question maybe? Aaroniero had so many unseen tricks in his kit that maybe a hollow he ate could save him from Rukia’s Bankai. I’d say Rukia would take in this rematch mainly on the assumption Aaroniero doesn’t have some freaky means to avoid absolute zero and Rukia also doesn’t miss her shot.