I'm torn between what Eggy & Demo are saying. They both have interesting points.
I started a thread which was closed for being
somewhat similar to this one. Basically, I was saying that the posters for the first movie all basically emphasized the introduction of Spider-Man.
Here we just see the awesomeness of a living, breathing Spider-Man, doing what he does.
The second movie's posters seemed to focus on the conflict between what he wanted to do & what he had to do, while sharing some of that focus on his struggle with Ock.
In virtually all of them, we saw Ock reflected in his eyes, his costume slightly torn in some of them-I think "Sacrifice" represented the movie best.
And the third movie's posters all focused on the internal struggle between him & the symbiote.
He's wearing one in reality & seeing the other in his reflection, as if it's saying "the real Spider-Man is still in there somewhere."
So my question is, depending on what theme you'd have them go with, how to best represent that theme?