It's kind of mixed. Some parts are very faithful, but there are also some changes that deviate from the original comics.
Logan is moderately true to the comics. It captures some key elements but makes a few changes for the cinematic adaptation.
Yes, Logan is based on the comics. But it takes some creative liberties to give a fresh take on the story.
In certain comic arcs, Logan does meet his demise. But comic universes are complex and sometimes characters can return or alternate versions exist.
Logan ages in the comics, but not in a typical way. His mutant abilities give him a unique aging pattern. Sometimes, his experiences and battles can also have an impact on his apparent age.
Yes, Logan and Sabretooth are siblings in the comic world. Their bond is far from typical, filled with animosity and power struggles.
Yes, Logan is dead in some comic storylines. But comic universes are complex and there could be alternate timelines or resurrections.
Logan's height varies in different comic storylines, but he's typically depicted as around 5 feet 3 inches tall.