Great, I think you should have a chance, but it is hard to say. I don't know exactly what work you did and also depending on how the universities evaluate your work. Based on my experience, European universities is more concerned about GPA relative to other aspects than the US. Moreover, for the safe universities, the top universities in Australia are safer.
Sorry, TBH, I think all are ambitious for you expect for Cardiff, especially UCL, CMU, EPFL, ETH, CMU, Columbia and UvA. These universes are all top universities, I think you GPA might be little bit low (maybe India has different standards, I'm not sure). Actually, I don't know much about Cardiff. In my opinion, I recommend you lower your expectations unless you can specify what your top conference is and whether it's first authorship. Then I can reconsider about it.