I played with both braided and twisted MFP, and found that the twisted was more resistant to abrasion. More then 5 years with Hempex.
I worked alots in the military with nylon 10mm twisted and 10mm cotton braided, for rappelling and boats operation. But even in very rough test, again rocks and hard surface, both was very similar.
In rappelling the nylon offer little elasticity and over a 50m cliff is became very heavy, less for the cotton.
we worked with little ropes 3mm jute or paracorde, and was normal that people saw the jute breaking for some of the things. I even did a rappelling from a paracorde, not recommanded.
But only in Bondage I saw so many rope break with natural fiber, and none from the synthetics.
I think its can be also related to the the breaking the fiber when the bending occur over a small object.
Fiber get damage but not visible.