Bob Willis feels Australia's aggressive cricket has made all the difference in what looks like being a glorious Ashes success.
They go into the final day of the third Test with England in Perth needing five more wickets to win the series 3-0, although England do at least have a small chance of victory on this occasion, unlike in Brisbane and Adelaide.
Ben Stokes impressed in the second-half of the fourth day and heads into Tuesday hopeful of a first century in only his second Test match.
But Willis says England's decline has been as marked as Australia's improvement and he gave plenty of credit to the home side in the latest edition of the Ashes Verdict.
"They've just got better and better as the series has gone on. England have failed in each of their first innings so that means when Australia come out to bat second time around they have licence to thrill," Willis said.
"With a batsman such as David Warner at the top of the order it's the perfect lift-off point for them and then the guys in the middle order have come in and just marmalised England.
"I've never seen a side in recent years look that dejected in the field and completely shorn of any ideas of how to slow the scoring rate down and take wickets. It was X-rated viewing for England when the ball was disappearing to all parts of the ground.
"It was almost Twenty20 scoring when Watson and Bailey were doing their thing and poor old James Anderson going for 28 in one over shows the influence 50 and 20-over cricket has had on the Test match arena.
"It's all a matter of confidence. Everything has fallen apart. First of all the batting which left England on the back foot in Brisbane. That happened again in Adelaide and then bowling started to show signs of creaking.
"Then England started dropping catches and Matthew Prior's wicket-keeping has gone down the drain. Pantomime fielding I think our reporter said with Bell dropping that catch. It was Monty Python's Flying Circus stuff."
Former Australia seamer Jason Gillespie added: "It was a brutal assault. Seeing such fantastic cricketers as James Anderson treated with disdain shows where this Australian side is mentally.
"More importantly it shows where England are at the moment. Their body language in the field, I haven't seen that from England in a long time.
"This has surprised everyone. Australia had simple plans, and they have executed them. Australia will be very confident of knocking England over but England do have a little hope looking at the glass half-full.
"As for a whitewash, we'll have to wait and see. It's looking that way at the moment but you would like to think England will put up more of a fight."