The numerical values for "sharpness" you are referring to are from the testing conducted at the site Refined Shave. There is not a lot of agreement among us DE shavers as to what these numbers really mean in terms of actual blade performance. The general consensus seems to be that it is difficult at best to quantify "sharpness" as perceived in actual shaving; there are a number of factors that contribute to the perception of sharpness. I don't mean to minimize the work of this gent over at RS, but there is really no substitute for the experience of trying blades on your face, in your razor. If you're like virtually everyone else here, some blades will feel smooth and sharp, others not so much. And that, it seems, is a very individualized thing.Interesting views so far everyone. Thanks for the replies.
The next thing, can someone contextualise sharpness for me? In other words, a feather can come out the packet at “32” vs a Gillette Platinum at “45.” How different is that?? (This is in relation to a graph I found on here.)