fighting a boss in a video game repeatedly without changing anything about your character/team/stats is a weird place between ‘the definition of insanity is doing something repeatedly and expecting different results’ and ‘it only has to work once’
I wonder if Usopp planned to light the rope himself, or if he anticipated that Luffy would be able to do something like this. In either case, Usopp was the one who saved the day while mostly was Luffy did was buy time for him to work by keeping Mister 3 and Miss Goldenweek busy.
This is a good example of what I mean when I say One Piece is better at showing real teamwork. Everyone has a role that plays to their strengths and covers someone else’s weaknesses, and they understand each other and support each other. There’s no squabbling about who does what or even a need to really communicate a plan. The necessary communication all took place organically beforehand, in the way people learn about each other by paying attention and listening and understanding their friends.