Maybe 0.84 sweezleblats better, approximately.
As long as definition of sweeleblats is stated, there is a set methodology for determining sweezleblats, and the same methodology used to evaluate the different lenses, it should serve well in comparing lenses.
Because, I believe that is what we are looking for. Not an absolute figure, but one that can be used for comparison. Our lens purchasing decisions are often a matter of comparison. I want a lens that is "better" than some other lens. Better being up to the consumer. When reading lens review sites, I am more concerned with repeatability and consistancy in their evaluations. Sweezleblats will work out great as long as I am comparing sweezleblats to sweeleblats.