Beside the Cantina battles there are enougth and better places to farm omega, imho. GW, ability challenge, ship ability challenge, daily activity, omega battles and you can buy Omegas in the ship store.
Was really surprised to see this. I have been 7*ing 16 cantina energy character nodes for quite awhile now and this was the first omega ever in the rewards. The unicorn is real...
Definitely doctored! I just got an Omega mat while farming Death Trooper from Cantina nodes. This makes the 5th Omega mat I've farmed from Cantina. (2 while farming Sith Trooper and 2 while farming Sith Assassin)