Thanks for the info. After further "research" (playing both sides of hotseat), I found that it "appears" that in Assault, the flags are farthest from the attackers, in Attack, they are a little closer and in Probe they are the closest to the attackers. This would explain why the "attackers" get the highest points in Assault(as compared to Attack and Probe). I also found that for a 1000 pt game, the attackers get 1750 for Assault, 1500 for Attack and 1350 for Probe, while the defenders always get 1000 pts.
Again, it would be nice to see a write-up somewhere by the game developers describing this in detail and confirming what "appears" to be the way this is set up....even though it is interesting doing the research.