Are cities with plague easier to conquer?

[Quasar1011]

In my latest game, I was fighting a long war against the Greeks. They had musketmen, and I didn't. However, I had built both Knights Templar and the Statue of Zeus. I moved 6 ancient cavalry 2 squares from Madrid, a city the Greeks had conquered. I then noticed that a plague sprang up in Madrid. When I went to attack, the Greeks defended with 4 musketmen. Much to my surprise, the first musketman fell quickly. I defeated the other 3, and took Madrid. Now, ancient cavalry attack with a strength of 3, but musketmen defend with a strength of 4. My question is, did the plague weaken the Greek musketmen, making it easier for me to take the city? Has anyone else had a similar situation?

P.S. I am allied with the Aztecs and Romans against the Greeks.

Screenshot:

 

[LLXerxes]

Probably. Black death in The Middle Ages scenerio killed off my spearmen.

 

[Pfeffersack]

Don't think so.I assume the defending musketmen had full health (if not, then it might be...but IIRC, plague kills units always completly)? I don't believe that plague effects the combat calculations...I would rather call it good luck that their musketmen don't hold against you AC.