Nice analogy.
If the 2014 Seahawks, believing the Packers were a joke of a team, certain to be beaten with minimal effort, and they then spent the week before the game drinking, smoking dope, watching scantily-clad girls engaging in simulated sex acts, and the coach then picked the starting lineup based on ethnic background and sexual preference, would the Packers still lose?
Your point is well taken. If indeed the West has entered an era of post Christian, neo pagan decadence, it too is in decline and the outcome of this titanic cultural struggle is not certain.