It's obvious what the intention was supposed to be. PvP players would work towards getting Centurion gear, and occasionally they would get surprised by phat Champion Gear with the RNG.
The pattern would be repeated to some degree at battlemaster. You'd get commendations to replace any parts of centurion with champion, and you'd occasionally get battlemaster gear as a random drop.
Nobody wants cent gear because champ gear was so easy to get with Ilum exploits.