For those who took both Jun 09 & Dec 09, How would you rate?

For those who took both Jun 09 & Dec 09, how would you rate the difficulty level of both Jun 09 and Dec 09 exam, from scale of 1 to 10. (10 being the highest and 1 being the lowest difficult level) I wonder whether the different passing percentage for Jun & Dec 09, is it something to do with different level of difficulty?

June 4 December 11

A Bloomberg article somewhat related to this topic: http://www.bloomberg.com/apps/news?pid=newsarchive&sid=aa4RJiwexh1A

June: 4 December: 10

I got a band 10 in june 09, with little preparation and passed in December with all >70%, however December was definitely much harder in every section.

June: 6 December: 9