Of course, taken into consideration the 2 hits of COES, it might be different... then again, you only need 1 COE for the 2 hits, so, 1 COE rest Titans= Awesome plunder.
From what ive seen u make more the more damage u cause ie allies pots etc so potentially foundries could earn more in pve as higher attk
Don't put too much stock in pure plunder - eventually, the monsters will hit back. Build a good war build, not necessarily a good plunder build, if you want to be ready.
I'm sure eventually they will. They might not be ready for a while though. It would add some suspense