don't think that you can say that a fatal flaw of one theory is that it doesn't match up with another theory when neither is known to be correct at this time.
Well obviously, but I'm saying not dealing with R&L the characters, not the theory, is the flaw.
Regardless of whether or not R+L=JS, R and L are very important pieces in setting everything in the SOIAF into motion.
That was my point.
Like I said, it's an awesome look at a parallel myth, and gives some good background, but I don't think ASOIAF will follow the Norse myth as closely as the writer predicts if R and L have no mirror in that myth. They're too important to the Song even if our theory is wrong.