A sword coloured black doesn't make it a black blade. Aramaki had hardened his branches in that panel.
He could simply have hardened his sword as well.
Yes. I'm Wano. Sanji defeated an opponent stronger than someone Luffy needed to tag team to win in the previous arc (Cracker). Final War Sanji being above Egghead Luffy won't be particularly surprising.
Also wings + Oda gives Zoro and Sanji opponents of equal rank.
Where does all this Kuma wank come from? He's not strong enough to stop Saturn and the Navy fleet.
Kuma definitely was preprogrammed to step in when he's daughter is in danger. However you are correct. He isn't strong enough to fight Saturn.
Saturn can "repel" any damage he gets without Kuma's fruit. Oda is really hyping him up. However he's bound to go down.
Why doesn't Saturn aim straight for Nika now? It makes no sense!! The Gorosei were searching for the fruit 800 years but now when it's technically in front of Saturn he doesn't bother trying to grab it?
Is fear of Imu and following his command to get the motherflame clouding his judgement that much??
Looks like we'll get about 3-5 chapters of flashbacks now. Just hope it doesn't drag too long. We are bound to get a flashback for the One Piece soon enough too on top of the flashback after Saturn's defeat ... flashback chains ...