Rome's insane plan to muster a massive army and go all‑out to kill Parthia is something that Zhuge Liang and the others by the Two Rivers don't know yet, but even if they did, there wouldn't be much they could do. After all, the second Rome–Parthia war over the Two Rivers has been a brute‑force slugfest from the very start.
This kind of way of fighting where anything we field on the battlefield will immediately be met with at least double, sometimes several times, the enemy's strength specifically aimed at countering it, is just too deranged—there was never any intention of leaving the Parthians any path to survive.
They're forcing you into king‑to‑king, general‑to‑general direct clashes, all‑round crushing combat. Normal stratagems have already lost their meaning; what's being tested is purely each side's hard power.
