I don't have the Mark III (standard or BD), but I think we can safely say that it is a superior FIGURE in every way. This thread isn't about whether Iron Man I or Iron Man II was a better film.
However, I am sad that there are SO MANY unflattering pictures here of the Mark III. There have been a few that really pop, but the majority of the pics really accentuate the negatives of the figure.
One of the major positive points of the Mark IV is that it is difficult to have unflattering poses for him. Just about every pose is a winner with this guy. Even for those that don't understand articulation!