It's the difference between driving an automatic, four on the floor, three on the tree, split shift, hydrostatic, etc....
Some actions better in certain situations than others. For a field gun I carry a lever action or pump action because they are faster for follow up shots. For a hunting gun I carry a bolt action because it's chambered to what I wish to use. For plinking I use both of the above and a single shot break action(might get some hunting use...we'll see...depending on the season bears are a problem).