That is why I said, if you ask people "in the know."Sir, this may also be a "Dil ko behlane ko Ghalib khayal achchha hai" type sentence. Who knows what Russia supplied to China is severely downgraded indeed. Is it possible to accept downgraded weaponry by China? No doubt Russians helped us in many programs but simultaneously they helped China also. They would have even helped Pakistan but for Pakistan was the ally of USA and later on Pakistan did not have enough money to buy weapons from Russia. As far as the reverse engineering is concerned, one may visit any research institute in India, save exceptions, so It will be of no good to say about reverse engineering.
Here is what I said:
There are people that you can talk to (Russia/China experts), who know how crappy and severely downgraded the stuff Russia sells to China really is, and will tell you the same thing I am saying. If you think about it, it makes sense, because why would Russia sell quality weapons to China when it knows that China will simply copy it. You don't have to take my word for it. Ask around. There are Russia and China experts that post on forums and blogs, and you can also track down some on Twitter, even ex-Air Force guys.While it's true that China has been a customer of Russian weapons, it's also true that everything Russia has sold to China so far has been severely downgraded in terms of technology. Ask anyone "in the know," and they will tell you the same thing.
Russia sells better technology to India precisely because India respects IP laws, and that is also why Russia has partnered with India in projects like Brahmos, as well as secretly helped in nuclear submarine technology. A lot more goes on behind the scenes with Russia and India than is known to the public. Don't go by what is published in media, often the writers have their own agendas.
Russians have a trust level with India where they are willing to even co-develop weapons systems, from scramjets to radar technology to nuclear submarine technology.
Russians don't trust Chinese at all. I know the weapons the Russians sell to China may "look the same," but the electronic components of those weapons (the brains) are severely downgraded crap. Again, don't go by what is published in the media, or wikipedia. The media is filled with paid drones that work on behalf of China to push Russia away from India.