The lingering question over the 2013-14 Ashes series is double-barrelled. It wasn't just how Australia reversed a 0-3 loss in the space of three months. It was how they turned it into a whitewash. Why wasn't the series result in Australia 3-1, or 2-1, or even 3-0? Why did it have to be - and by the final Test match in Sydney, it absolutely had to be - 5-0?