Dude it opened on a Wednesday. But it had weekend days or holidays its first 7; this is a more accurate chart.
http://boxofficemojo.com/alltime/grossbydays.htm?days=7&p=.htm
Superman is 25th with 108 million (it says 105 because they added the dailies wrong), upon release it was 20th. See Batman Begins, way down at 48th? Notice though...only 5 of the films infront of Superman arent sequels. You cant compare Supermans opening to sequels, you just cannot. Their box office runs are almost always complete different while very predictable. Sequels OPEN BIG and then drop. Non sequels-like Superman-open ALRIGHT but less then sequels- and have better legs then sequels do.
Only 5 non sequels beat Superman, and the average gross of those 5 films is 324 million. Thats why I say it opened fine. Had it gotten the legs most non sequels gotten, it would totaled over 260 million+, which is more then the expectation, which was atleast 250 million in the U.S. But it couldn't get them due to a combo of
1. Wasnt the film people wanted
2. Pirates 2
Singers film, without Pirates 2, would have totaled in the ballpark of 230-240 million.
-Batman Begins opening week-to-total multiplier was 2.42 (205/84).
-War of the worlds opening week to total multilpier was 1.95
-Spidermans was 2.35
Given Superman Returns average drop per weekend was 24% and its incredible August legs from Imax, i'd say it would have gotten between a 2.1 and a 2.2; or between 226 million and 238 million.
It Failed expectations by about
12-24 million.
Singers film, with Pirates 2, totaled exactly 200 million.
It failed expectations by
50 million.
50 million is bigger then 12-24 million, guys.
Dissappointment either way. If they can fix both, a gross between 260 - 280 is defiently in store for Supes 2, maybe even 300 if they really get it together.
But only If.