Foffa Bikes

My point is that anything can be measured objectively it just depends on how you go about measuring it.

Possibly, by sufficient observation of physiological markers, one could determine that subject A responds more positively to an SLR rather than an Arione, and that subject B responds more positively to an Arione rather than an SLR. Or you could just ask them. That still makes saddle comfort a subjective matter.

sub·jec·tive [suhb-jek-tiv]
–adjective

1. pertaining to or characteristic of an individual; personal; individual.
   

One might even be able to take measurements of the pelvic area and other material characteristics of the cyclist and predict with unerring accuracy which of the two saddles they would find more comfortable, but it would still be subjective, i.e. you would get different results for different subjects.