Better than us but you'd still lose the series.
I think it'll depend on the composition of their team, Australia's bowlers staying fit and Steve Smith performing. If they go with the 6 batsmen and 5 bowlers model, it's walking that very thin line between bravery and stupidity. If it comes off, they'll have a damn good chance of winning the series. If it doesn't, Australia's record of not losing a series there since South Africa's readmission will continue.
Hazlewood, Starc and Cummins are a match for their attack but if one of them get injured, Australia's pace attack isn't as fearsome. Smith is brilliant but i have doubts about the rest of the batting order against a top class attack.