Hilfenhaus looked like a surprise decision, but in the end I think everyone's perception of Stuart Clark mellowed quite a bit. Simply looking at the two bowling, it would have been hard to pick the more senior player and claim it was on merit. Don't forget that Hilfenhaus was actually the incumbent from South Africa.
To see Lee take 14 wickets at 18.2 in 3 tour matches might suggest grave selectorial error, but due to an untimely injury, he was really only in contention for the final game. It wouldn't just have been the selectors who were not keen to make a risky change.
Some would say that the risky change had already been made. Up to the point of his axing, Hauritz had done his job. He was bowling tight overs, picking up wickets and even bowled with a recently dislocated finger. He certainly wasn't the worst bowler of the series and up to that point he'd done his job better than Johnson.
And what about that Johnson? What does a selector do when your best bowler suddenly becomes your worst? You can drop him, but that doesn't undo the damage and it rules out the chance of him actually coming up with the match winning performance that you picked him for in the first place. What they really needed was for him to on song at Lords. Alas, he couldn't do it.
The analysis is ever so simple. The team that lost the series had the best batting averages and the best bowling averages. If they got things right on average, then what is the missing data? The extremes. The maximums and minimums. I don't blame the bowlers too much for not destroying their opponents, because you could see from both sides, conditions mostly did not favour bowlers of any sort. However, there were sessions where the bowling, even for day 1 on a belter, was unacceptable. There were times where the bowling rotations were forced onto the defensive. Similarly, for all their hundreds, the lows of the batting were just too low. Australia often caught the gift of a wicket thrown away, but they all too easily handed the advantage back by collapsing.
In both losses, there were questions to be raised about both the bowling and the batting, but at other times, those questions seemed a touch ridiculous. Unfortunately, consistency is an intangible scapegoat. It is not so easy to find as it is to blame a single person.