AvengeLEGOs

You're right, didn't notice. Mark VI/Triangle chest piece armor in the Jeep set, Mark VII/Circle chest piece armor in the Quinjet set

Those are comic Iron Man and Cap figs, not movie minifigs

So they show art for the Helicarrier and Jeep sets, but not the other two, because they're still keeping the aliens secret I think there will be a whole second vehicle in the Quinjet set

So Black Widow, Cap and Hulk are each only in one set. Looks like the Jeep set is the only skippable one