Beyond the correspondences themselves, what I find interesting in this article is the mixed approach: on the one hand, we have an intuitive, visual, or mythographical way of drawing analogies between the cards and the deities/zodiacal symbols; and on the other, we find a system within this overall take, namely, the diurnal/nocturnal connection, which is less obvious, but still quite functional, I think. As Rougier points out, most other authors take the opposite course, trying to fit the symbols to the system.
Obviously the value of such a study, to my mind, is in pointing out the personal work of study and contemplation which must be accomplished, rather than accepting wholesale the theories of another, regardless of whether we accept his correspondences or not.
For my part, I could never really reconcile Saturn with XV The Devil, although I accept that this connection can be made under certain aspects. Instead, Rougier draws connections between Saturn and VIIII L'Hermite and XII Le Pendu, and this makes sense, to this reader at least.
Of course, there is a profound connection between Saturn and XIII too. We may return to this in due course.