Seeing as Paramount already blew their load on their big stunt for this iteration of Mission: Impossible by including it in the film's trailer, it's fair enough that they might think 'screw it' and whack it on the poster as well. The shot from the film works so perfectly as a still image that it's hard to blame them. It's pure adrenaline given poster form.
Cinephile since 1993, aged 4, when he saw his very first film in the cinema - Jurassic Park - which is also evidence of damn fine parenting. World champion at Six Degrees of Separation. Lender of DVDs to cheap mates. Connoisseur of Marvel Comics and its Cinematic Universe.