The biggest problem for Australia is that except for Starc (Who himself is on the wane), they do not have good white ball bowlers for all conditions and their batting isn't reliable as former Australian teams. Australia unlike others have filled their team will all-rounders which means that they just have 3 specialist batters putting lots of pressure on Warner, Smith and Labuschagne. Their bowling attack as well isn't threatening. They are good for the home conditions but outside that they will struggle on most occasions. Cummins himself isn't a great ODI bowler. He is marching towards greatness in Tests but in ODIs his average is nearing 29 with an economy rate of 5.3, which is ordinary. Hazlewood is good but again he isn't someone you would worry about on these pitches.
Zampa has lots of pressure being the lone spinner and it seems like he hasn't recovered from the battering he received from SA about a month ago, seems to be going for 60 runs on average in his 10 overs. So it might look as if the Australian team is soft but that is not the case, they lack serious skills for these conditions. They were so unsure about their batting that they had to replace Agar with Labuschagne which also is troubling them as a good left-arm spin option would have been helpful.
This is not saying that Australia cannot turn it around. While their batting is filled with all-rounders, they can go berserk one their day and score big, just that they will lack consistency. This is what we saw in the bilateral series against India as well, they folded in the first 2 games and then scored 350+ in the third. It is not Cummins's fault, it is just the way Australian team setup is at the moment, they are unsure about their ability in these conditions. The fact that Maxwell has been their best bowler since third ODI against India tells you the story. You cannot play Marsh, Stoinis, Green and Maxwell all in the same team and expect to be consistent. They surely are missing Travis Head as he would have given them the balance they are so badly missing.
Cummins himself I feel wouldn't be in the ODI XI if he wasn't the captain. That makes it difficult for him as well but again they have Abott to replace him which doesn't inspire the Aussies with confidence.
