I hope I can track down the original source for this extract, because that's very interesting if it's borne out by the evidence.
And I don't just mean the frequent depictions of Vernal and Autumnal Equinoxes as upwards and downward held torches shown either side of Mithras in the Tauromachic imagery - I've been wanting to find a reference that allows me to potentially link Orion with Mithras, aside from that.
Orion (and Ophiuchus, 180° away) are, in our age of the Great Year of Precession, halfway between the Vernal and Autumnal Equinox positions. The positions will become more precise as we approach 2100 and the VE and AE points drift still further westward.
I spy a quest...