Here is blog that compares action in films
It seems that the avengers action is rated higher then man of steel.I explained some of the reasons myself for that in another thread and the avengers have more action and man of steel really had less.
It was about the same amount as ironman 3.
The How Much Action Blog
MAN OF STEEL
IRONMAN 3 AND Marvel's The Avengers
Too see other action movies open link below.