I would like to see Vet2 PGrens vs Vet0 Shocks. I'm willing to guess that the PGrens will win easily, which is pretty stupidly OP.
You can vet the PGrens to Vet2 for a stupidly small amount of fuel, and yet their reinforcement costs stay the same. This means PGrens become far far more cost effective than Shocks over the course of a few engagements.
It just goes to show how ridiculously OP purchasable vet is for the elite troops doctrine.
+1