Stronger, easier to work with. Sisal has a habit of breaking under any kind of load larger than a water bottle, unravels and starts to rot in days. While nylon DOES break down under exposure to UV light, it still will hold up longer than sisal.

What sisal does have going for it is that it burns, sorta, which means it can be used as wicks, and biodegrades, so if you have to leave it behind you aren't leaving something for future archaeologists. But if you are out long enough you need wicks, you can make your own cordage, and for practice, pack it out with you. In the real deal, you either break down your shelter when you move out or just leave it, just like scattering rocks from a fire ring.

I've never knowingly worked with jute, so I can't comment on it.

Oh, and I want to see you make a bowstring out of sisal or paracord, I'm thinking it would be some kind of sketchy.