Its safe to say in base form G1 Luffy (elbaf arc) is now relative to sanji in power (if not possibly Zoro).
Explanation:
In the elbaf arc chapter 1129
He uses a miniature gear 4th
And do mind after the dressrosa-whole cake island arc Luffy stopped using gear 2 techniques. based on that we can say that Luffy will use all of his gears in base. I have a theory based on this statement. due to gear 5 being the ultimate form I dont think there would be use for the other 4 gears when he has an awakened form. I feel like after elbaf Luffy wont have the need to rely on gears to face opponents anymore (excluding Gear 5). I know people would say its bullshit. or liam wont agree. but there is a possibility