It is an interesting topic, lets discuss it some.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4453625/
Let me hand pick an excerpt for by Dr Sharp (neurologist) / Dr Jenkins (clinical research fellow, Imperial College London) regarding their subsection "
current definitions of concussion"
"There is still no universal consensus regarding the definition of concussion. The 2012 Zurich Consensus Statement on Concussion in Sport proposed that concussion and mild TBI should be viewed as distinct entities.20"
I'm not sure this is relevant, because the article we're discussing defines them as the same thing (Mild Traumatic Brain Injury, commonly referred to as a concussion)
This seems to be the more relevant quote of the article you provide
"In contrast, recent American Academy of Neurology guidelines for sports concussion in 2013 do not separate concussion from mild TBI, defining concussion as “a clinical syndrome of biomechanically induced alteration of brain function, typically affecting memory and orientation, which may involve loss of consciousness”. However, they noted a lack of consensus in the use of the term, with an overlap in the use of concussion and mild TBI." Which I don't use because it supports my point, but because this seems to me to be closer to what Non academics (read as practitioners and/or providers) use to define the term (Source: Anecdotal).
Now if you want to argue that the TS separated the two terms with the use of "And" because he does not believe a consensus has been reach, and though the primary article discussing this new test does not make a distinction - he believes that there is an interest difference between the two that is worth noting even implicitly... Then fine, lol that's why I premised my original comment with "I'm confused"
In fact I can even agree that the distinction is noteworthy in this case because concussions are diagnosed symptomatically - and this test goes beyond that in a new interesting way that it IS infact worth separating the terms.
But I still contend that I don't see the effect this has on MMA, at least not in any way that is relevant or interesting unless we're hypothesizing decades out - at which point I think its reasonable to assume we would know more about bran injuries that full contact sports would already be affected in other ways.