I didn't watch their match tonight. And I can't say that Ghana didn't deserve to go through, but they were lucky that they had stupid opponents in this group and help from the referees.
Stupid red by Lukovic, moronic penalty by Kuzmanovic, ref gives them a very dubious penalty against Australia and doesn't give a penalty to Serbia in the last minutes against Australia.
They had huge luck. Still, like I said, one can't say that Australia or Serbia deserve to qualify more than Ghana.