From the Review:
"The heroes of the DC universe are no strangers to fighting each other in videogames. Mortal Kombat vs. DC Universe is one such example. Of course, when recently speaking with Co-creator Ed Boon (NetherRealm Studios) about this, he admitted that fans of both franchises wished to keep those franchises separated. Thus, Injustice: Gods Among Us was revealed in the latter half of last year, prompting some valid questions. For instance: how do you create a game in which a villain like Catwoman can stand on equal footing with a hero like Superman? How entertaining could a game like this possibly be? Well, you will have to read on to find out the answers to these burning queries."