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The undoubted runt of the otherwise excellent four main Avengers films is purposeless and a near stand alone mess that almost interrupts the arc of the other three. Given all involved it is a surprisingly low-tier entry in to the Marvel movie universe. New franchise offshoots are set up to little effect and a potentially interesting artificial intelligence villain story-line is very muddied, plus the main crew don't really seem to care much this time out. Winters Soldier is the real fourth Avenger film.