Another option is Xenia, which can run the Xbox 360 version. Some users prefer this version as it was notoriously difficult to unlock uncensored finishers on certain regional PS3 copies.
The game is playable on Xenia, but benchmarks show it can be prone to occasional crashes depending on your hardware configuration. Mortal Kombat Vs Dc Universe For Pc
Currently the most reliable method. Many players report it runs well at 1080p and 60fps on modern hardware. You can check the compatibility status on the RPCS3 Wiki . Another option is Xenia, which can run the Xbox 360 version