Well, I've seen it. That's the best I can say about it.
I think the body-count reviewers had to exert max effort, even more than RIII, to glean their numbers from frame-by-frame inspection or the script. It's also hard to decide between "wounded, might make it" and "no hope".
However the ordnance and special-effects budgets seem to have set new all-time highs.
Although Rambo seems pretty handy, he never got behind the steering wheel. Maybe his license expired, but I can't remember any of the movies actually showing him driving a vehicle. I'm going to have to recheck my memory someday.
I am not a fan of Regal Entertainment's pre-movie distractions shifting from a slideshow to a video. It felt like watching TV commercials in a bar, only without the entertaining patrons or booze or cheap food. I can get as much of that as I want at home for free, and with less advertising. If all movie theaters go this way then I'm done with them.
The movie set new standards (high or low depends on your definition but either way it's definitely past six standard deviations from the center of the bell curve) for gore and gruesomeness, starting with actual film clips of the genocide being carried out by Burma's "leadership". The CGI pales in comparison to the reality.