If the NFL itself admits that players will get early dementia twice as often as the general population, then players probably develop dementia four times as often as the general population.
Well that would be a good argument, unless you imagined sitting in front of an all black jury of 300 pound women.
You’d come out of court with less than three cents in your pocket, and the jury determining the incidents were 42 times the general population. Never-mind the plaintiff only claimed twice the incidences.