Regarding to this “china buying su35” story, my bet is that end result is far more likely that India will do another purchase/upgrade of Su30MKI in the next couple of years.
Think about it, for that last 10 years, everytime Russia claimed china buying/interested in Su27sm, Su30MKK3, Su33, what happened couple of years later? China did nothing, India ended up buying/upgradeing Su30MKI.
I think starting from 2015, we will hear from Russia that China is interested in PAKFA, and India will have to act:D