@Yes it is the way to say the Russain weapons are working.So they to need them to Iran or Syria etc.

All of modern weapons shown either by US and their allays or by Russia and China on other side of equation have only one intent - to deter potential enemy.

If you are analyzing all weapon systems advertised by US you would think that enemy will last no more than 30 minutes and all will be over.

However, reality is absolutely different. War is still very dirty, gritty nitty and very much bloody business that wont finis off so easy.

Western allays have more than great deal of share in such experience for example Irak and Afghanistan where no matter of what degree of sophistication they use, they simply cannot destroy ragtag army made of peasants and illiterate people.

So that means that with Russia is not much different and that is the reason they do not want to enter in direct confrontation with other side as any failure would lead to massive loss of self confidence and respect.

So far they only compare technical data obtained during their own tests.

It is unfortunate fact that we would like to see Russia steps on the world stage as US equivalent and counterbalance to their aggressive imperialism, but Russia is building its fame and confidence on hot air only as they do not dare to export even obsolete weapon systems such as S-300 to the countries in need but rather plays dishonest and cheating game of avoiding to deliver given and stipulated promise to other side only not to expose that they were way below given data.

For as long as the Putin will play that stupid game and at meantime with his cronies and chosen oligarch rob the country from precious funds, the country will remind paper tiger only.

know very well how good this AA weapons are, that is why they opose so much to arms deal between Russia and Iran/Syria