I am reluctant to give a ratio but my guess is that the improvement is significant. Personally I am not thrilled by cryonics for a completely different reason, namely I'm not sure the value of restoring my life at a point in the future in which civilization has advanced much beyond its current state is more than the value of things I can do with my money in the present, in particular things that increase the probability this advanced civilization will actually come to pass. Also we don't have cryonics in Israel so I don't have to decide now anyway.