Well, Munro ... you might have to take that cheesy AP victory after all!
Is that a rhetorical statement? Or are you looking for some insights? Let's assume the latter ...
Assuming that the massacre in Zulu is one of the tiring events, one thing that aided my success was that stack of yours and oyzar's having quite a few mounted units and cats IIRC, who did not benefit from the defensive bonus (which was 75%, IIRC).
Then, I had about 8 cats to throw at 25 or so units in your stack. Assuming about 5 collat damage hits per cat, 40 hits to distribute across 25 units meant a good chance each unit got two rounds of collateral damage before my killers went into the fray.
Then, with a limited number of units benefitting from terrain defense, an attack plan of sacrificing units to damage those key defenders (not using the strongest unit first, or using a unit with a retreat chance) to "expose" the non-defensive units (now damaged) to attack prevents wasting the strongest units on the good defenders in futile attacks.
Finally, I had enough HA to do a lot of flanking attack damage to your cats, allowing lowly archers and chariots to finish them off.
You could check the recent combat log and see if any of these tactics contibuted to what I assume is a recent bad go on the battlefield.
dV