I think the most important lack is that seven samurai is a story of a team working together, with each person using their skills in a way that benefits the whole. Mifune's character is especially interesting because he never does what the leader wants him to, but he still manages to repeatedly do things that benefit the group. That is why the leader eventually accepts him. This makes some very important and profound points about the difference between community and obedience.

None of this is present in Magnificent Seven. It's just a story about a loose association of individuals kicking the butt of some bad guys. The fact that Sturges missed this essential point is indicative of the American inablility to understand the importance of cooperation and teamwork.