archivality is not a single measure
Life span of a print is influenced by many variables,
including: humidity, temperature, light exposure, and
environmental pollutants (including those outgassing from
wood, paper, adhesive, etc.). Different materials respond to
these factors differently, and more so to different
combinations of them. Therefore, unless you are overly and
deceptively simplistic, it makes little sense to argue that
the process x is more archival than the process y, unless you
specifically define what "archival" means in the specific
context.
There are some no brainers you hear about all the time. For
example, untoned silver image v. sulfur toned silver
image. The latter is more resistant to any and all combination
of the factors that influence the image longevity and in such
a context, without going to be deceptively simplistic, there
is no need to define what is meant by "more archival."
--
Ryuji Suzuki
"Make something religious and people don't have to deal with it, they
can say it's irrelevant." (Bob Dylan, Biograph booklet, 1985)