Jackman and Stewart are why Logan works-why the film doesn't feel like a cheap exercise in bloody violence, and its subversion of typical superhero-movie tropes feels organic.
Strips away the spandex, the posse and the chaos, distilling the story down to the essence of the man, Logan. What's left is the agony and the ecstasy of mutanthood.
Jackman gives Logan a withering rage that seems heartfelt, not hammy; Stewart is touching in his enraged befuddlement; and Keen, who resembles here what Katie Holmes might look like if she were Carrie, has a feral intensity.
Make no mistake, Logan earns its tears. If Jackman and Stewart are serious about this being their mutual X-Men swan song, they could not have crafted a more heartfelt valedictory.