These guys are right about the pups (AFAIK)... but keep in mind that both players rely on more than just a certain pickup configuration to achieve their sounds.
Adam Jones has used Gibson Silverburst Les Pauls since ages ago and a lot of people claim that they have a unique tonal chacteristic because of their unusual finish. And don't forget about his amps. He has German-made Diezels that he cranks through Marshall cabs. It would be pretty difficult to emulate his tone completely, as he has one of metal's most unique sounds. Daron uses primarily Ibanez guitars, but while in the studio making Toxicity, he tracked most of the album with Gibson Les Pauls and SGs. A lot of his tone comes from unique playing style.
Good luck with your quest for tone... I'm just pointing out a couple tidbits.