I do believe you, like many others miss the point with these names :) it is a common mitake made when you attribute processes today, and relate them to the advertising of old... The point being that the advertising on most all of these just wasn't true / or was very mis-leading...
Same as in the 60's every product on the shelves was "New and Improved" it wasn't until much later that the laws were put into place that made it illegal to advertise it as "New" unless the actual formula of the product had changed by a certain percentage...
I hope that helps you understand it a bit better now... Just because Sub Zero was on the front of the razor don't mistake it for the Cyro processes of today :)