The alliance has recovered, nothing suggests any of them are in a noticeably weakened condition and most of them are partying at the festival.
To think Kizaru makes a difference here you pretty much have to believe that Kizaru can beat
- Law
- Kidd
- Marco
- Zoro
- Sanji
- Yamato
- Jinbe
- Scabbards
- And like 10 other strong characters at once
because Luffy himself can handle at least one Admiral, to claim otherwise is delusional.