With Injustice providing the option to have MK-like inputs (single direction) which would be more compatible with a controller or SF-like inputs (full motion inputs) which would work better with a fight stick, which control scheme are you planning on using?
Being a novice to fighting games (I watch a lot of streams and understand most of the tech and how it works, but just don't have the time to practice), I felt like I had more control in MK when I used the d-pad. When I play SF with a fightstick, I feel like I'm fighting the stick. That might just be more to do with my personal skill level though.
I understand that the fight stick allows for quicker directional input, but I feel like people were able to pull off some crazy shit in MK with just a controller. I think a minimal button game like MK or Injustice will work fine with a controller since you don't have to fumble around with all the shoulder buttons as much. At least, that's what I'm hoping. I don't want to buy a fight stick for my PS3 if the d-pad doesn't turn out to be a viable option.