It's probably that I notice the differences in post 1960's steel related to pre- and immediately post WW2 that are maybe more due to manufacturing and refining differences. These days we have numerous special recipe steels claimed to be better than traditional carbon steels. Chrome, vanadium, molybdenum, nickel, tungsten, titanium and other elements added to iron to supposedly make it longer lasting, hold a better edge, be more corrosion resistant, less brittle, tougher... I do think quite a lot of it is marketing hype as I can make a screwdriver from a bar of tool steel that will perform as well as some of the expensive "best ever" screwdrivers you can buy with all their fancy alloy claims.
Correct fit and profile of the blade, finish is important too as grinding/filing marks can be a useful aid to help prevent cam-out but the hollow ground profile is the biggest contributor to anticam-out. It also extends the life of the screw head.