Apparently he's trying to one-up Bruce Willis. This ain't no PG-13 footage, AICN crows, and by golly, it's not. It's hard R. Really bloody and gory.
On the other hand, a bit cheap looking and low-energy. But it doesn't look bad. And I like the philosophy of brutal realism it espouses: Responding to what appear to be Christian missionaries or other good Samaritans going into the war-torn Burma jungles to change things, Rambo says, "You're not going with weapons? You're not changing nothin'."
Ah, well. I hated Rambo but I think I'm alone in having liked Rambo III. I'll see it. Pretty much it has the production values and plot of a Friday the 13th movie -- Jason Joins Delta Force -- but hell, it's cathartic to see the bad guys get theirs. We don't see enough of that in real life, alas.
So the last Rocky was called "Rocky Balboa," the last Rambo "John Rambo." Coming soon: the eagerly-awaited Sundance production "Marion Cobretti."