The title sums it up, this isn’t a movie about Wolverine—the animal inside—it’s about Logan, the human who deals with the consequences of said animal. Spoilers!
Logan takes place in a different cinematic universe from the other Marvel Releases. First, it’s void of the common thread running through every Marvel picture, Stan Lee. Second, X-men comics actually exist within the film—now, maybe this has happened before in the Fox franchise, but my doper memory can’t recall it. These two things seem small, they are remarkably significant in that they create an artifice which shifts Logan from a regular Marvel melodrama, into stark drama.
In cutting Stan Lee, they’ve removed the wink at the audience, and kept the characters firmly behind the fourth wall. And in the film, Logan scoffs at the comics, in particular his mythologized past. He derides that notion that they were ever a merry band of mutants, in bright coloured tights, kicking ass. This sends a heavy ripple through the franchise, because it implies that the other films we’ve watched up to this point are the same trite shit that Logan Despises—maybe Logan is the only accurate account of an X-man.