Commandos and Spatrans are even, But BOSS and MC are another story. They outpreform other commandos/Spartans, and are even with each other.
More on topic would be that the CC would win one on one, The plasma could esily destroy a section of armor...look at Sam, The armor of the CC (Kartarn) even blocks the more human-ized weapons of the trandoshans
Commandos better than Spartans
BOSS better than MC
Lets face it...I own you