I see wake9 and others talking about displacement and adding up the weight of the boat etc but that's a meaningless number IMO without also referencing the size of the boat.
Take a 21' boat and a 23' boat with the same overall weights. They are technically displacing the same amount of water but the 21' is sitting deeper in the water for the same displacement thanks to it's smaller surface area. This translates to a larger wave, I think draft is just as important as weight.
My last boat was a 23V and a buddy has a 21V. Same exact boat with 2 extra feet in the middle and the 23 takes a lot more weight to make the same wave.

Same with the Makai, you've got a boat that's not that much heavier than it's siblings overall but has significantly more surface area so it doesn't sink as deeply in the water with the same weight. Hence the need for 1000lbs of extra weight to get a great wave. I would venture that more weight would make an even better wave.