In Battlefront and its sequel, I noticed that some factions are the winning side of some maps.

In these games, sometimes the "evil never prevails" is proven (but in terms of video games, it should really be "not usually"), but sometimes it does prevail.

There is only one I know of in the first one: on Bespin: Platforms during the GCW, the Imps are the losing side.

BF2:
For hunt mode, there are only 2 I know of:
1) Ewoks vs. Scout Troopers and the Ewoks are almost always the winning side (lesson to learn, don't always underestimate fuzzy little teddy bears) (I at least got my revenge on them during Conquest by using Darth Vader to butcher those little creatures).
2) Jawas vs. Tusken Raiders and the Jawas win usually (man, they must be really dangerous example of Tusken prey).

For hero assault mode, that is when the "evil never/usually prevails" is proven, because the heroes are the winning side.

In Jabba's Palace, the winning sides are the Rebels and CIS (maybe the Imps and Clones are usually losing because they are still stupid enough to get on the trap door when it is easy to see or to go near the Rancor).

That is all I can think of right now.

If anyone has any other examples please post them here.