I don't know what game you were watching but Julius didn't dominate shyt when Dray was in the game. If the refs were calling shyt evenly, they would've overturned the call to an offensive foul on him (when Dray picked up his 4th), which forced Dray to come out of the game.
Julius only got it going when he was up against the corpse of Looney and other wings when Dray came out the game. He was allowed to play fooball out there.
He's literally been playing against non-existent frontcourts over the first two rounds.