User blog comment:Thundrtri/The galaxy's last breath will be drawn: Covenant VS CIS Droid Army/@comment-422690-20130328020043

Overall, I'm giving this to the Covenant. This battle is very similar to the Clone Wars conflict - the Covenant has the better technology as well as the ability to have independently thinking soldiers. This gives them a huge advantage in combat, not to mention their plasma-based weaponry. Plasma is ionized gas, which will wreak havoc with the droid's circuitry. This is actually an established fact in the Star Wars universe.

The CIS, on the other hand, don't have a whole lot to use against the Covenant, barring missile launchers. Since they use standard photon-packet blasters, there's not much they can do to dent the shields other than sheer volume of fire, which the Covenant can return with greater efficacy, due to the easy kill nature of their weaponry. Overall, the Covenant has overwhelming firepower AND strategy on their side. The massed droid formations fell to the Gungans - imagine what a proper military force could do.