Doesn't that number (not backed up by any other source) basically put it above and in line with most of the Marvel solo films opening weekend numbers. Those are in the wake of the Avenger and Iron Man films doing between 100 - 200 million. Not to mention this is going to be a solo female lead film while all the others are male lead.
http://www.the-numbers.com/movies/franchise/Marvel-Cinematic-Universe#tab=summary
So how is this a bad thing? Did people base Thor: Dark World, Winter Solider, or Guardians when they didn't open as high as Iron Man 3 or Avengers? Are we now expecting solo films to do as high as the group or team films? Was that there for Ant-Man, Dr. Strange. Are people going to be crapping on Black Panther when it doesn't project as high as an Avenger film?