No, the main benefit of PF30, as with all other press-fit cup systems, is that the BB shells are easier to manufacture, so BB shell suppliers are moving en masse to PF30 since it reduces the QC reject rate. PF30 shells do not have to have the super tight tolerances that BB30 requires to work correctly. Press-fit is mainly of the benefit to the manufacturers, not consumers.
Our future alloy frames will be PF30 for that reason. The shell supplier to our frame maker moved away from BB30 shells. Fortunately the drawbacks of PF30 versus a real BB30 are just a minor weight increase so we do not feel compelled to insist on BB30 at all costs.
Yes, I'm well aware of that. But there are the side benefits to the end user too for the PF30. To me, especially if its a aluminium or carbon shell, the way a BB30 is installed, by the time you get to the 3rd or 4th install, there will be some wear and tear on the shell surfaces already. Which would defeat the tight tolerances required in BB30 for a good and proper installation of the bearings. Its somewhat similar to the bearing races in wheel hubs. By the 3rd or 4th installs, you'll find that its no longer 'press-fit' by tool anymore, more like press-fit-by-fingers ... In the case of the BB bearings it would mean a fair amount of play and like creaks in actual use.
PFBB30 by comparison due to the nylon interface, doesn't induce this sort of wear and tear on the race surface. And would be more tolerant of poor installation skills too as the nylon sleeve being deformed rather than the BB shell in the case of poor alignment. And being nylon, you're far less likely to get the irritating 'creaks' from long term used as opposed to the original BB30 interface too! ....
Hence, my take on benefits to the end-user.