If the Russian player barely knows where some of the German units are located it's at least one squad wipe for sure. It's not about defeating a blob, you can't save any unit from the barrage.
Once you listen the sound of the rockets you have to retreat every unit (while mostly it is too late) otherwise they will all die.
And when you bring these units back to the front the cooldown is over and the same thing starts again.
The Stuka has a rather small line. Deathly and precise - Yes that is indeed true. But the line has a width of about two or three meters ( about 20 bananas) while the Katjusha has a circle of doom.
Everything in this circle will die if you haven't sacrificed at least a medium sized goat before the match.
