From one angle it looked like he caught it and just got fingers under. From the other angle there was absolutely a bump and looked like it may of touched the floor. I wouldn't have liked the job of 3rd umpire on that one.
In my view the on-field umpire should have given a decision of out or not out and then asked for the review himself!
That way, the 3rd umpire would have had a starting point. If the on-field ump had given out then the 3rd ump would merely be looking for conclusive evidence to overturn that decision. And the same if the on-field ump had given not out but referred it to check. It should not be up to 3rd umpire to make the full decision in my opinion, otherwise you may as well not have on-field umpires. But luckily, I am pretty sure that this catch hasn't made any difference in this test match!!
I can't see the Aussies coming back in this match. And to be honest they will need every single ounce of character to fight their way back into the series. Saying that, they never seem to lie down and give up. So it wouldn't surprise me to see them fight back!!