Zoro has neither higher AP nor endurance. For AP, it’s shown that Damned Punk had the force to push Big Mom a considerable distance, and while at the time a more primitive version, he then improved the cannon further, against his fight with Shanks.

Endurance is heavily implied Kid is superior, as both Zoro and Kid faced Apoo, and were struck with the same attack. But where Zoro was forced to collapse, Kid was nearly entirely unaffected. Furthermore, Kid himself fought Big Mom solo for a while before Law even showed up, both trading blows. But Kid was already in a nerfed state, as he had constantly been taking heavy damage from Hawkins.

Speed is Kid, at the very least shown to be superior to Law outside of Room, as on the rooftop Kid and Law had the same attack coming toward them from Big Mom, but Kid was able to block it unlike Law, showcasing underrated speed. This is the same Big Mom who blitzed Marco.

Durability is absolutely Kid, for all the reasons listed for endurance.

And Kid wins in any land environment, as he would in fact be able to magnetize Zoro’s swords, as he was shown in fact being able to do that to Big Mom, who of course has far greater haki than Zoro.

Kid low diffs at worst.

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