The Transformers film franchise is a bit of an enigma.
Financially, the high-octane, robo-slugfest is an undisputed juggernaut, racking up a whopping $2.67 billion globally at the box office between the first three films. ($2.67 billion? Wow.) This gargantuan figure places Optimus Prime and Co. behind only Lord of the Rings, Harry Potter and Pirates of the Carribean in terms of average gross revenue per film in a series...