yes, I agree... great info.
as a common practice, I always push the screwdriver down into the screw head as hard as I can before I apply sideways torque to loosen any screw. If the screwdriver head fits relatively tight in the screw head, the chances of stripping it out is slim.
That and make sure the faces of the splines of your Phillips screwdriver is not chewed up. Cheap tools deform easier due to their softer temper of the steel that is used, which is why I use Craftsman hand tools with their lifetime warranty... When the wear out, take them back to the store for a brand new one.