Man of Steel is a great example of a film that suffers from action fatigue. About halfway through, Zod and his group find Superman in Smallvile and proceed to level the town in a pretty good action scene. It lasts a decent amount of time and has innovative action beats, with characters being suitably strong and cool to watch. Later, we have a much longer action scene focusing around Zod and Superman, battling in a destroyed Metropolis. What should have been the most interesting fight scene in the movie ended up being a mostly forgettable mess - partly because of the characterisation issues the film has, but also because we have been over exposed to Superman and Zods power. We've been watching them fight for so long that we have lost our frame of reference, and end up tired of the fight and lose interest in the story. Action fatigue is an issue that a lot of films fail to address, and I'm sure that Gareth Edwards knows this on some level, giving us Godzilla as the counter.
