Yes, Russia is crap.
BUT, having said that. The truth is, no army can win a war under the current rules of war.
This was done on purpose in my opinion so that WW2 really would be the war to end all wars that WW1 was supposed to be.
True, in the old days entire cities would get flattened. WWI and II style wars are pretty much off the table. And especially when you realize the losing side of either of those would have absolutely used nukes to save themselves.
The Japanese, the Nazi Germans, etc. They would have done it.