*
You have also moved the goalposts, so to speak. From talking about force required to cause concussion, to that of specific contact sport incidences. *

*, ignoring sustained, rotational, cenrefugal forces ect). Even with those who are gifted in this area it would be a very impressive feat; not only to measure the variables but to calculate them. Perhaps as sensory tech advances and quantum computers crack prime numbers we will see an improvement here.

* HITs only measure above 15g and only for 48ms. This has been used to improve protective wear and provide predictive (not certain) values.

As I have said the fact remains that there are little facts. There are observations, trends in data ect but no true answer. It is misleading to claim there is*

This is an interesting link, and yes looking at american football. The whole thing is worth reading but I'll pull a few key lines from the conclusion.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2943536/

"Ultimately, the analysis fell short in identifying a single variable or set of variables that predicted concussion in high school football athletes on a level that can used for diagnostic purposes. The use, therefore, of the Head Impact Telemetry System as an acceptable diagnostic tool is not warranted at this time. The HITS can, and does, provide a clear indication of which individuals necessitate further evaluation following an impact."

Reference:-The Biomechanical Properties of Concussions in High School Football
Steven P. Broglio, PhD,1 Brock Schnebel, MD,2 Jacob J Sosnoff, PhD,3 Sunghoon Shin, MS,3 Xingdong Feng, PhD,4 Xuming He, PhD,5 and Jerrad Zimmerman, MD6