I can but speak from experience. My experience is that hydraulic clutches are more failure-prone than cable ones.
Given that one of my current cars started off with a hydraulic clutch but was converted to a cable clutch at the time it also got a 5-speed gearbox ['cause the bellhousing was also changed] I can but say that the clutch action with the cable is far better [smoother takeup, lighter action] than it ever was with the hydraulic setup.
Thats largely a matter of it being hard to achieve good/repeatable balance of braking force across four or more wheels with cables. I'll agree that hydraulics are good at uniform force-distribution but this is not a problem with cars where there's only *one* clutch master-cylinder!