Which Films Are The Worst In Marvel Cinematic Universe?

There are twenty one Marvel films in the Marvel Cinematic Universe.
Business Insider gave their pick for the worst ones.
"Iron Man 2" (2010) lands at the top of their list.
"Thor" (2011) is the second worst MCU movie. It was seen as boring.
"The Incredible Hulk" (2008) brought Ed Norton as The Hulk. Audiences didn't like norton's take and he was axed from the franchise.
"Thor: The Dark World" (2013) was the sequel to "Thor." It was flat and left audiences dejected.
"Doctor Strange" (2016) was seen as dull and uninteresting.