That's a relatively meaningless piece of self congratulation on the part of the CAAB.
Effective implementation by Region currently stands as follows:
Africa 41%, Asia 68%, Europe 72%, Latin America & the Caribbean 64%, North America 93%, Oceania 47%
Worldwide Average 60%
Source: ICAO
http://www.caab.co.bw/caab-news-deta...=517&type=news
Oceania and Africa pull the world standard down from the 74% success rate achieved by excluding them to the lamentable 60% including them. A mark of 60% wouldn't even achieve a pass in either a South African or British ATPL examination.
What's truly astonishing is the gap between the 92% achieved by the US and the comparatively pitiful 72% European success rate. If you were to take the US out of the equation, the overall average decreases to 58.4%. The US rate of achievement is thus perhaps reflective of the capable, accountable and efficient authority to be found in the FAA.