I've read the opposite from a lawyer site. The Seau suit would be a slam dunk in America, against any industry other than football. The only question is is that if we dumb down football, to the level of the rest of America, and let this suit happen.
Another tidbit. This never used to happen in football. Only in the age of helmets, did the guys start thinking that head butting another at 100mph was a good idea.