I actually don't think this film is going to hit $100 million.
I believe this weekend's revenue was courtesy of the fans who heard the word of mouth, but wanted to see the film and form their own opinion. The Bourne Legacy would have done much better, and would have been much better received (at least by me), if it had been a stand-alone film without tying itself to Bourne. There were other title options, such as:
The Cross Dilemma
Code Name Cross
Double Crossed
The Aaron Cross Proxy
Blue Pill, Green Pill
The Pill of Life
The Cross Fix
The Cross Divide
The Cross Option
The Cross Addiction
Operation Outcome
The possibilities were endless.