Hello, let me answer this question as a personal suggestion.
First of all, the two anime are not related. Even if they are related, it is just the friendship between the artists, just like Naruto ended and Oda changed the icon on One Piece.
Furthermore, the strength of these two people is incomparable. Luffy ate the fruit, but Payne can prevent the moves. But brother, have you ever thought about it? Luffy knows the third gear and can fight Ming Ge. He has not yet beaten the Yonko... Payne can activate the Shinra Tensei. The strength of these two people is unfathomable. It is estimated that they will fight head-on. Let's make a tie...
Finally, it doesn't matter either of them, let's talk about help. Everyone knows the scope of Luffy's friendships, including the Yonko Shanks, the revolutionary Ryu (his father), Vice Admiral Garp (his grandfather), Whitebeard, Shichibu Hailuo, Hawkeye, and Croc Dahl and the Empress, as well as Pluto Rayleigh, the ancient weapon Shirahoshi, Jinbei of the original Shichibukai, the second captain of the Whitebeard Pirates, Ace (his brother), the revolutionary Sabo (his brother), the revolutionary I Vankov, Mr.2 Von Clay, a pirate group as small as Luffy. Payne's help was provided by the Akatsuki Organization, and this help was unparalleled.
Also, Luffy can listen to the voices of Neptune-types, and he can do Haki and shift gears... Pain can do Shinra Tensei, and he is also Six Paths. This is also a key.
But if I had to choose, I would prefer Luffy. After all, Luffy has a wide range of friends and is very strong.
But I still want to expose it. There is no sea in Konoha. Even if there is a sea, do you think you can take the risk?
It’s just done by hand, I hope you will adopt it.