Even though Monkey D. Luffy has attained a new form, Gear 5, and has mastered all kinds of Haki in One Piece, Shanks is still a step ahead.
Even Gear 5 Luffy is Not Strong Enough to Beat the Man Who Inspired Him to, one piece 5
Gomu Gomu no Mi/Gear 5 Techniques, One Piece Wiki
After Chapter 1107 are people finally ready to admit that Luffy is acting weird in Gear 5 and that this isn't how he's been all series? : r/OnePiece
One Piece director teases “groundbreaking” Gear 5 episode, one piece 5
One Piece: Is Gear 5 Luffy As Strong As An Admiral?
Naruto vs One Piece: Can Gear 5 Luffy solo the entire Narutoverse?
Gear 5 Luffy by newgate-arts on DeviantArt, gear 5 of luffy
Anime One Piece T-shirt - Luffy Gear 5, anime one piece gear 5
One Piece Characters that Can Potentially Defeat Gear 5 Luffy, by Faisal Zaid
One Piece: Luffy's readiness to accept allies is his strongest ability - Dexerto, luffy