Except that Doriki didn't count neither weapons nor DFs.
So Kaku's doriki didn't measure his swordsmanship (he didn't even have his swords with him when Fukuro measured their doriki) and his DF inflated swordsmanship.
Basically Kaku's best move, Rankyaku Amanedachi, wasn't counted in his doriki, because it's something he can do only with DF. And DF power up is textually stated to not be measured by doriki.
So by doriki, it's Lucci >>>>> Kaku > Jabra >>>>> the others.
While by overall strength, it's Lucci >>> Kaku >>> Jabra >>>>> the others.
Luffy extreme diffed Lucci (was almost a draw). He was completely unable to move after.
Zoro mid/high diffed Kaku. The former was more or less on par with the latter before going all out with Ashura; after Zoro used Ashura, he annihilated Kaku completely, trashing the latter's strongest move and immediately KOing him. He was perfectly fine after.
Sanji high diffed Jabra. They were more or less on par before Sanji went all out with Diable Jambe; once he did that, he won, but he didn't dominate and annihilate Jabra like Zoro did with Kaku. DJ Sanji still needed three hits to win: one tanked, one dodged and another gave him the win but he needed to trade a wound to land the attack.
So it's Lucci >>> Kaku >>> Jabra >>>>> the others.
And Luffy > Zoro >> Sanji >>> the others.