One of the biggest mistakes people have is they say The Cartel didn't have the "western" setting and was just another generic modern shooter. Those people are horribly wrong. The Cartel was attempting to try out the "Neo-Western" genre. And for those who don't know what that is, it is media that takes the themes of the Western, but put is set in the contemporary, even urban, American West.
Here are a list of movies/television shows that are Neo-Westerns:
Bad Day at Black Rock
Bring me the Head of Alfredo Garcia
Comes a Horseman
The Cowboy Way
Don't Come Knocking
Down in the Valley
The Good, the Bad, and the Weird
Kill Bill Volume 2
My Heroes Have Always Been Cowboys
No Country For Old Men (One of the inspirations for Call of Juarez: The Cartel)
Once Upon a Time in Mexico
A Perfect World
The Straight Story
Sukiyaki Western Django
Tears of the Black Tiger
Thelma & Louise
The Three Burials of Melquiades Estrada
Walker, Texas Ranger
So yeah, watch any of these, and The Cartel will make sense.
Anyways, I am excited for CoJ 4.
Confucius say: "Man who plays with fire, makes ash of himself."