First, Luffy on his own can half the enemy numbers in under a minute:
- Hancock: Hancock here is like Sanji vs a woman. She's like a "+ 0" in the equation.
- Crocodile: Compare Crocodile's strength from what we saw pre-TS with what Luffy could do already at Dressrosa. Just the haki takes away Crocodile's advantage entirely, but G4 is overkill. Luffy can knock him out in the first second of the fight, with no. Another "+ 0".
- Moria: Moria is a - 5: he takes up space. Without years of preparation time stealing thousands shadows in the florian triangle he's way weaker than Crocodile.
- Kuma: As impressive as Kuma is, he was not a haki user and he got his shoulder dented by a pre-TS half-dead Zoro. He supposed to be PX-0, the prototype before any other Pacifistas. The unbeatable pacifistas, who had more durable bodies than the original Kuma, went from taking a combined effort from the whole crew to go down, to being demolished by a single swordstrike of Zoro or a single kick from Sanji, right after the timeskip. Current Luffy with all his CoA upgrades and future sight? He's going down fast. His DF is the only reason why I said Luffy takes under a minute with these guys and not just under a second, but Kuma could be surprised and blitzed pre-TS by both Zoro and Ivankov. He really could be instantly taken down by current Luffy.
Now the three that could be tricky:
- Luffy vs Doflamingo: I'm of the opinion that Doflamingo's real strength and agility got nerfed for the fight by Law's gamma knife, and it's true Luffy would have lost if he hadn't received help when he ran out of haki, but ever since that fight Luffy has learned Future Sight, projection CoA and internal destruction, on top of other forms like Snakeman. Doflamingo can last somewhat and be annoying, he's not a + 0, but he's not near Luffy's level anyore. It's possible he would go down in a single serious punch or two of internal destruction, but his high mobility makes him tricky... however, while Luffy is in G4 Doflamingo has no real means of harming him as we saw during their fight.
- Weevil: The only thing we know is that Weevil is strength and a comment of Kizaru saying he could really be Whitebeard's son because his strength reminds him of his. The only actual feats he has going for himself is beating up nobody pirate captains from the NW that at most could be around YC level.
- Jinbe: Tricky opponent too thanks to the impressive haki he showcased against Who's Who and his karate and jiujitsu techniques. However, as impressive as his haki was, it was still just normal hardening. A very strong use of it, but no internal destruction that we know of, which means it's below Luffy's.
Weevil has no DF that we know of and the only data we have on him is his physical strength. Luffy can easily keep him for last just by keeping his distance which means this really is just Luffy vs Doflamingo and Jinbe. In fact, here's how the whole fight could be over in under a minute:
If Luffy starts the fight by doing a Kong Glating with internal destruction haki onto the enemy team, those seven warlords are staying down with the exception of perhaps Doflamingo if he's fast enough to fly away, but he would go down seconds later. Even if Jinbe or Weevil were strong enough to tank some punches they aren't tanking the whole barrage. Kuma could possibly counter the barrage but as I theorized earlier he's not fast enough for that if Luffy really means to win fast.
I acknowledge that based on Luffy's personality the fight could get needlessly longer but he's really bound to win the fight as no matter how easy he takes it some of his enemies can only take a single punch from him.
If the rest of the SHs are in the fight then it's just overkill.
