Source: http://bishopbjj.com/ these guys did some excellent work where they deconstructed the 2012 Worlds. The report details information on techniques, results, and trends. Make sure to check out their site for a further in-depth analysis.
Be sure to also check the article on high percentage techniques in Jiu-Jitsu looking at statistics
Sloth Jiu-Jitsu: you can be slow and unathletic and still kick butt in Jiu-Jitsu.
Welcome to SLOTH Jiu-jitsu – the ultimate programme for conserving energy, utilising body weight and taking your time! An especially effective strategy for older or less athletic competitors, but suitable and highly recommended for all jiu-jitsu practitioners. 12 chapters taught in person by 3rd Degree BJJ Black Belt Gile Huni.
