Just a clarification...
The comparison provided yesterday was a comparison of like reports. The January 2009 (amended June 2009) report was updated in the July 2011 report, and these are the only two like reports available now for comparison.
The April 2010 report as well as the January 2011 report updates have not been issued, and therefore not compared. These may also require an update or even retraction if either is deemed not fully in compliance by the BCSC.
In any case, the July 2011 report is a fantastic piece of work, and continues to be the best and most comprehensive basis for showing the potential of the Nolan.