Quote Originally Posted by Guardian XIII View Post
It was a prayer before it was a sign for victory. The Fayth dreamt up this Zanarkand, so they can make anything whatever they want it to be, i.e. a prayer gesture becomes a sign for victory. Yevon isn't known about in the dream Zanarkand but his teachings were present nevertheless.
We don't know for sure what the real Zanarkand was like, we can't say if it is was always a prayer or not. Plus, Tidus' Zanarkand while fictional was nonetheless based on the real thing, making it likely that it was a sign for victory first. Moreover, Yevon, the religion, is only founded after the creation of Sin and the Fayth thus its teachings could not be present in Dream Zanarkand since the religion was a constructed after Yu Yevon made Sin and the others became Fayths.