Was there an instance showing RK Thor being challenged in the least by any particular physical threat?
How does Hal even hurt him?
Was there any limit placed on the power that the Runes have? I always thought that it was an infinite power? So putting it into perspective, this pretty much boils down to Hal's power vs the Rune's power.
I can't see Hal doing much more than hitting Thor with loads of power, there being a huge burst of light and particle effects, that do absolutely nothing to Thor in this state. It would be like driving a sedan into Casper the friendly Ghost.
Unless of course there was one instance that shows that he was vulnerable to physical assaults? That's basically all that Hal brings to the fight. Vast physical destructive force.