The contradictions of mixed martial arts brawler Mark Kerr can’t be contained by a ring, an octagon or a film. Their version of “The Smashing Machine” tells the same story that Hyams did, across the same years with the same handheld aesthetics and rattle-snap jazz score (by composer Nala Sinephro). Look at how dutifully Safdie and Johnson have worked to re-create this world, the movie seems to be saying. But “The Smashing Machine” should be about change. Turns out Kerr has been a car salesman for the last 15 years, but you wouldn’t know that leaving “The Smashing Machine.” You wouldn’t know why this movie existed at all.