[5] First Blood is a terrific action movie because, as absurd as it gets toward its conclusion, it’s rooted in solid drama and with great verisimilitude. This sequel, cowritten by Sylvester Stallone and James Cameron (Titanic, Avatar), and directed by George Cosmotos (Tombstone, Leviathan), lacks that sincerity or realism. It’s much more of a comic-book superhero movie, complete with a leading hero who looks more …