Maybe, but then we are also the worst team ever if we lose a couple.Not as much as England get overrated by the media in England if they win a Test or two.
When people talk about Australia it is always about how Starc and Johnson are going to destroy England. The Starc thing is purely based on the World Cup, and then really we have no idea if Johnson is going to be any good in England this time around. If Harris is fit and Johnson is anything like he was in the last ashes then Australia will win, but I think it is unlikely that both those things will happen.