Complaints usually are, yes. I'm not a lawyer, but each one I've read has been a bit over the top and it feels like they're written as much for public consumption as they are for the judge. Maybe it's with the jury in mind?
I don't think it's just legal language—I've read plenty of court opinions too, some dramatic, some not. Complaints seem particular prone to the dramatic.
By the way, the "champion" language I mentioned could actually be trademark-specific language that I'm not aware of.