Differences between world pensions

The other day I was looking for a comparative graph which would show the differences between the different world pension systems. I searched by typing key words such as 'compare pensions in the world', compare pensions world graphs', 'best pension in the world'etc. 
However there were very few websites showing clear differences between the different world pension systems.
It is obvious that no one would find the 'perfect' information regarding the best pension deal instantly by simply surfing the net. Pension systems are notoriously complicated and changeable depending on individuals' circumstances, tax and health systems, countries' population trends etc.
I gathered that in general, by looking at the oecd's document (listed below) the country which is currently ahead of every other one with regards to pension systems is The Netherlands, followed by Iceland and Australia, as shown in the graphs below:

The data I am referring to is found on the ocde's July 2011 issue, on pages 7 and 8, from the
http://www.oecd.org/dataoecd/63/61/48438405.pdf document.