"^^^ Yes the Russians do advertise about the product when it is part of export list , We even found specs of PAD RF head which was published by DRDO in some exhibition. Journals like DRDO DSJ provides more information and specs are released , thankfully they do not find its way on mainstream media."
IMHO, this only shows you are not following the level of information available on the Russian side. Let me provide a few examples.
AGAT website has lists of seekers with different ranges, Another company,was telling details of all sorts of naval seekers. These are not just export units, they give a good idea of the basic technology available to Russia for its own systems as well.
In 90's, IEEE journal published all sorts of details about S-300 series of systems inducted in Russian service, openly disclosed by Russians in interviews in order to demonstrate system capabilities and out of national pride.
Details include the level of architecture of the radars, including fire control systems. No such information is available for many US or European systems.
This is just one example, I can give many such example which you may presumably not be aware of.
DSJ information is vetted and does not contain classified details which affect operational use.
"But for things that they do not export the Russians do not put out much data , even after 2 Decades of operation the world knows much less about Shipwreck missile capability than they know what Brahmos can do."
No, this is not true. Todays Russia is not Soviet Russia where information was only available to Warsaw Pact official or within Soviet Union. Now information is everywhere.
I myself know there was a 340+ page book in cyrillic with details of A2G weaponry developed by different agencies in Russia available for purchase. It had all component details, performance specifications and other things that could be used to gauge performance, if one was so interested.
Non Russian speakers may not find it useful, but professional INT in USN will know enough about Shipwreck missile capability as they employ Russian language translators, technical professional and the Russians publish huge amount of technical literature.
You are talking of one DSJ, but Russian academic publication publish hundred of papers from operational organizations like Phazatron, Almaz Antey with details of technology development and progress.
They have significant failures also in keeping data private.
Famous issue of stealth from a russian paper apart, manuals of Su-27 were leaked online when baseline version without upgrade is still operational in Russian AF.
All the information on Brahmos has come from Indian counterpart specially from horses mouth , it is better to put a lid on information flowing out of brahmos , then to brag after each test what they did and what was achieved.
This is very illogical/ unreasonable talk, if I may say so since it is just setting up Pillai/Brahmos corp to fail.
If Brahmos does not tell what it achieves people will mock Pillai for just saying successful test and not giving details. "All successful tests, but what does it do"
If he gives details, which are very generic in nature and do not affect operational capability, then people get paranoid.
It is important that the world, the public including taxpayer, and the enemy know that Brahmos is a potent, successful weapon. That is the basis of its deterrence capability.
And talking of what he has achieved or his team has achieved is bragging?
Then why dont you go to US, Europe, Russia and every country and tell them to keep quiet after every significant achievement. Lockheed Martin gives detailed press release after every test flight of JSF, no matter how minor it is. UK gave details of recent naval SAM tests including performance against low RCS targets. Russia during MiG-29K tests is even telling about RCS reduction features, even featured on AWST.
Pillai has set a good standard in making Brahmos Aerospace accessible in term of achievements, without divulging any operational gains to opponent and he should continue with his present work.
What Brahmos has achieved is remarkable. For a weapon to be routinely available on time, on budget for service needs shows effective program and technology management. He should in fact publicize it more, and derive useful lessons learnt which may be leveraged across other JVs such as MRSAM/LRSAM programs.
And if all information on Brahmos has come from India, that is because an Indian is the CEO, and is responsible for the performance of the company, not some Russian.
In contrast, Russians give 100's of interviews every year to defence magazines, to their media, print thousands of brochures and reveal all sorts of operation related performance and claims.