I think they maybe stayed out too long on the super softs.
http://www.f1fanatic.co.uk/2013/03/17/2013-australian-grand-prix-tyre-strategies-pit-stops/
13-14 laps from the start is far too long for that tyre, and even with that the mediums didn't last as long as they thought they would. I think their entire race was compromised by this decision and their tyre degradation isn't as good as they thought it was.
The good thing about that - if true - is that the car itself still probably has very good pace with the correct strategy.
http://www.f1fanatic.co.uk/2013/03/17/2013-australian-grand-prix-tyre-strategies-pit-stops/
13-14 laps from the start is far too long for that tyre, and even with that the mediums didn't last as long as they thought they would. I think their entire race was compromised by this decision and their tyre degradation isn't as good as they thought it was.
The good thing about that - if true - is that the car itself still probably has very good pace with the correct strategy.