You point out yourself that you approach the question from a Christian basis, which surely gives overwhelming relativity to you interpretation.
You're stating that a principle of absolute spiritual transcendental truth (whether it be Christian or non-christian) is MORE relative than contemporary distortions of scientific method? That is a little more disturbing, but still not surprising. It's my fault for not elaborating key ideas, and perhaps, assuming more of a philosophical inclination on your part. Let me try to explain what I meant again via a different approach:
Assume for an instance the premise that a spiritual reality
does exist; that it has primacy over all events at a material level, and that all material events and situations are seen to derive from or have basis in matters at the level of spirit. An existential hierarchy becomes evident, with spiritual truths and principles clearly more "fundamental" or "absolute" in comparison to observations and ideas that have basis on material perception.
Those who perceive and ponder matters with a spiritual insight do so with faith as a primary basis, not doubt, which is the premise of science. That does not make spiritual logic and spiritual thought any less precise; in fact, for those with a mystical inclination, spiritual logic and reasoning has incredible mathematical precision to a level of clarity that is wonderful and resounding. Faith is, in its true and purest form, a door by which to activate spiritual perception, judgment and reasoning such that it is similar to or even more acute than material perception. That is what is refered to as an absolutistic mode of thought; the belief in and application of a spiritual absolute truth, providing a higher perspective by which to discern and act on all events at the level of the material.
Impose on this state of affairs a fundamental shift of perspective: the notion that faith is absurd and that one should adopt a premise of doubt in all matters of thinking. Then material perception appears to become the more "truthful", and spirituality perceived to be an issue of mere conjecture. The association of the term "fundamental" with spirituality, becomes a contradiction of terms, nothing more than a defunct "connotation" or overtone due to influences past or oblique. Confined to the material realm in all matters of reasoning, one may attempt to search for absolute and "fundamental" truths within the realm of material science, or abandon the notion of an absolute truth altogether.
Let me also state that I am not an individual unfamiliar with the scientific and scholarly method. I have lived my life in a scientific and science-related profession, with numerous publications to my name, and understand fully the assumptions, arbitrations and limitations of contemporary applications of "scientific method". True scientific method, in its purest forms, may actually be utilised to serve both spiritual and material modes of thought. However, that's a matter for another discussion.