victor75 and others, do not get caught up in the percentages. Did you know, statistics show that 75% of all statistics are made up!
Geddit?
Just go and do the best you can do. Prepare and give a good presentation of yourself. Plenty of accurate information on here regarding what to expect in the assessment. They are not looking for anything special, just a well-rounded NORMAL individual, who in the case of a FO/SFO has the ability to self-critique and develop, and the patience to stand the work environment at QR, and life in Doha!
Good luck to you all.