First, before you launch, set your hero settings so that heroes will spawn a second after the game starts. Otherwise, this strategy won't work.
As soon as the battle starts, select the CIS and acquire Darth Maul. Quickly run to the Republic Command Post (CP3 or Comms room) and spawn-kill all of the clones there because the clones always charge, you can just kill them and get large amounts of points while the remainder of your forces capture the rest of the CPs.
NOTE: If your forces capture most of the CPs, then enemy reinforcements will go down automatically.