1) Iron Man 3- 406.8M
The only film that even could have a dream of touching Iron Man 3 is the upcoming Hunger Games sequel. Even then, that is unlikely.
2) Man Of Steel- 280.8M
3) Monsters University- 237.7M
4) Fast and Furious 6- 236.5M
5) Oz The Great and Powerful- 234.9M
6) Despicable Me 2- 228.3M
7) Star Trek Into Darkness- 224.3M
8) The Croods- 185.6M
9) World War Z- 176.9M
10) The Great Gatsby- 143.2M
11) Identity Thief- 134.5M
12) GI Joe: Retaliation- 122.5M
13) Now You See Me- 113.2M
14) The Heat- 112.3M
15) The Hangover 3- 111.6M
16) Epic- 104.8M
17) Olympus Has Fallen- 98.9M
18) 42- 94.9M
19) This Is The End- 91.6M
20) Oblivion- 89.1M
21) Mama- 71.6M
22) The Lone Ranger- 71.4M
23) Safe Haven- 71.3M
24) A Good Day To Die Hard- 67.3M
25) Warm Bodies- 66.3M