By your own - Jesuit - logic you shouldn't include those three cosmonauts since they didn't die in space. But you did include them 'cause you feel yourself the absurdity of not doing so. And to separate Russian space programme from Soviet, or to exclude hundreds who died on the launch pad from the list of casualties (because "it didn't happen in space") is utterly absurd...
As a matter of fact, no one here denies Russians (or Soviets, same sh*t) their real - huge! - achievements in the space exploration. So stop revealing your inferiority complex, Vania, and cut the Agitprop crap.