I have updated the OP with the following:
"My assesment was correct. For the last reported fiscal year the PS3 sold 115.6 million units software units and the XBox 360 sold 103.1 million units. This while at the end of March 2010 Sony sold 4.47 fewer units to retail than the amount of XBox 360s shipped by Microsoft.
Meanwhile VGChartz has also already adjusted the PS3 install base up in Europe/others for the period before 2009."







