I'd have to agree with Kees, it's not about easy-to-read continuity or getting to know characters from the show (you can get to know the Avengers much better by reading their comics too, and on the flip-side the show has already gone away from the comic storyline and will likely continue to do so). It's about people who are comfortable reading superhero comics, and people who aren't. If you're OK with physically perfect people with goofy names and concepts clad in spandex fighting villains similarly goofily named and clad then you've probably been reading superhero comics already and don't need to be drawn to the trades. If you happen to like Horror movies on the other hand, and zombie movies in particular, hearing about a way you can enjoy a zombie movie that goes on and on and on would seem like a cool and unusal thing. It's more likely to draw someone into reading comics in general than the Avengers would be because it's not about superheroes (which is the genre most associated with comic books), and people are unlikely to be aware comics like the Walking Dead exist.