Is this game going down the drain?

[Von Nanega]

IIRC, in RTW retreating units that were attacked turned around and fought. In MTW2, this is not the case. In all my battles where the enemy tried to withdraw, I was able to wipe out entire units of high-quality troops without losses to my knights because they didn't fight back. 500+ kills for one unit of knights? No problem! It's fun to watch the carnage, but it's far from challenging...

When the AI retreats, he doesn't do it smartly, i.e. have a few troops to cover the retreat. All of them just retreat and he doesn' care if you slam a few cavs into his rear at all or only hunt him with 1 or 2 isolated units he could kill to reduce his own losses.

I fought an engagement vs HRE. While they retreated, I was chasing them down. Some armoured sgts took a brief stand before they routed. It seems to me the reason they routed so quickly is any of their units near them were already routing. But they did stop and fight!