Australia is already well ahead in terms of winning the series after winning the first two matches of the five-match T20 series. The way Australia is performing in this series, it is easy to imagine that the third match will decide Australia's series and if they can perform like this till the fifth match, then West Indies can be whitewashed in this T20 series. Although there are not big expectations from West Indies in other formats, there were expectations that they would do well against Australia in T20, but they are disappointing in T20 like in other formats.
That true west indies as expected lose the second match of the series too against Australia. It's true that might Aussies were looking much more dominant side from different aspects compared to thier opponent, but still I believe on the basic of thier previous matches performances and thier statics in shorter format indicates west indies has ability to surprised them at any upcoming matches especially at t20 format, so I think it's too already to predict west indies white wash series defeat, as still they have several single handedly match winner monster at squad so things can change at any second.