Because Jabura is the one who says DF's are not taken into account when measuring it, let me remind you that Kaku was measured BEFORE eating his DF, and wasnt with his swords either.

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Oh, sorry i forgot Sanji was made of rubber too....
He literaly did fend off both of them, showing how irrelevant Jabura is.
All using his walking tekai, as i said, one advanced roukushiki technique.

Pasta machine is better than all that crap and its the weakest atack he used, if Kaku decided to use the slash he used in the building on Jabura his weak af tekai wouldnt be able to hold, not to mention his shigan using his giraffe neck, thats more powerfull than anything Jabura could ever hope to replicate claws or no claws.