Well point is, using the JT will let us have the momentum with the fleet, as well as using the soon obsolete Elite JT to the maximum. 33 % worker and 7 % Great Leader chances are bonuses there. If we did a different calculation besides the simple win and military loss ones, and added points to the relative values of 1. Mobility Momentum for Cavalry and Eastern Fleet. 2. Opportunity for Worker 3. Opportunity for Great Leader 4. relative loss of JT to Ancient Cavalry and 5. C3B will get GA sooner or later, we may consider the percentage value of doing this operation worth 55 % for doing it and 45 % for doing the AC attacks first.
I know this is a risk, and we had the attack turn when we got our GA.
COMA was right during the Surprise Naval Battle of the Jaguar Sea (2 galleys taken) and the Javelineer Ambush at Isthmus Hill, where in fact chances were lower for us getting a GA if people remember. So COMA was right one out of one turns now, and we can assess his skills on five various turns of battle, three more to go, if he was right.
I would say, great leader and worker gains opportunities, the risk of sacrifice, the non-upgradeability of Elite JTs, the lost mobility of our force if we risk our ACs needed in enemy territories as well as the better sacrifice of JT to AC. Except for this battle, JTs are only good for scouting, decoys and some defensive positions. In fact, it is soon time to disband for shields and saved upkeep or to sacrifice remaining JTs in battle. Remember, upgraded Elites lose their elite status and become veteran, and the Elite JT will never attack again on better odds, possibly its only chance to get its last worker and GL.
So all in all, this is the best analysis for the use of JT
Analysis
I guess the C3B sent these two to isolate the JT on that Isthmus, not knowing the AC locations. Likely they guessed that the JT could attack them and win over SS Raptor, but lose in the Immortal Barclay in the counteroffiensive, or escape SE and be trapped on that peninsula by two immortals. Whatever we do, we will face some risk, yet, operational mobility should have priority. Consider GL and Worker bonuses, and their GA a major risk.