The best selling album of the year sold about 350k in Australia while in France it sold in a normal year about 1 million copies, the French market is about 3 times bigger than the Australian one. The Bomb has got a better success in Australia, #23 and #26 in YEC of 2004 and 2005, #18 and #49 in France.
When I see Back To Bedlam hitting the #1 9 weeks in Australia, also #2 for 6 weeks and charted in the top 5 at Christmas time and be certified at 5xP, I found hard to believe that the #10 in a poor moment of the year can sold ~5k per week.
The 2.3k figure at #27 seems not right too, in UK last week the album at this place sold 7-7.5k, I really doubt that the Australian market equal to a third of the British market!