Aizen’s team beats the shinobi alliance. If he has all the Espada with him it just makes it easier. Barragan’s hax takes out most of the alliance, Starkk spamming Ceros and wolves, Haribel is ehh but Gin’s Bankai and Tousen’s Bankai can give a lot of trouble to the alliance as well. All of this is before Aizen even has to lift a finger.
Obito’s Team having the edos makes this interesting, Obito’s hax is pretty OP, Sage Kabuto was pretty good, the Zetsus are useless but the Edos could change a lot. Edo Madara is a major problem and will be more than a hand full, the previous Kage will be good matchups for some of the Cpts and Lts, Ginkaku and Konkani could cause some problems too. I could see Obitos Team winning if the Bleach side is limited to their feats at that time. Like if Yama or Shunsui could go Bankai then a lot of this changes.
Great scenario OP