I think it reflects a pretty mediocre year overall for test cricket.
There are names there that I thought WTF but when you look at their figures it makes sense. Atkinson took 52 wickets at 22.15 in 9 matches. Henry 48 @ 18 Hazlewood 35 @ 13 but missed 40% of Aussies tests.
Ducket only averages 37 but what opener set the world alight last year. Not any Oz or Saffa.
Jadeja shades Lyon. Smith looks the tidiest keeper with a good batting record. Hazlewood is the only player that looks an obvious omission, but as I said maybe they figure he breaks too easily. Plus Aussie had a really soft programme. Pakistan Windies and India (minus Josh in the main) at home and two tests against us away.