That tells the story of a team that is consistently inconsistent. Follow up a great win in Sri Lanka with a miserable defeat in West Indies, for instance. That's typical England of the last few years. When you look within series, even in the series wins, you see the same patterns, generally - a good performance followed by an awful one. I would date this pattern from the Mitchell Johnson series, which marked the real break-up of the old team.
This Australia team is not that good, that's what is most frustrating about this series. A solid England batting performance would beat this lot.