Obviously it's not the only issue. They have looked scared of Johnson. Just like they did with Steyn & co. a year back. We don't seem to know our best side - Cook's on his third opening partner in 3 series, over the last 3 years. Morgan, Bopara, Taylor & Bairstow have all failed to nail down a place in the middle order, in Ben Stokes, we're on our third all rounder in a year, and, when Bresnan isn't fit, we don't have a reliable third seam bowling option. And then, of course, threads like this take away from the fact that Australia are simply playing at a very high level right now. But I don't think it's any coincidence that Cook, Prior, Swann & Anderson are all performing well below their usual standards now, when they haven't had a proper break for two years now.