Godzilla had by far the best opening but may have had a shorter run since the movie box office has changed in recent years. Godzilla was $30 million and $20 million behind the second and third place films so it wasn't far off from them.
The comparison is probably slightly off also due to differences in movie prices and again different box office runs. Sony's Godzilla placed 7th and Pacific Rim 9th.
Go to Box Office Mojo here for the complete list.