The landing in Normandy launched the Western Front of WW II that the German army dreaded and within six weeks they attempted to assassinate Hitler because he refused to sue for peace.
Also, the Russian article ignores the land lease supplies sent at great cost by the Allies to Russia that included everything needed to defeat the Nazis - especially important was the food and four wheel drive trucks/ jeeps that gave the formerly horse and foot Red Army infantry an edge over the German military.
The articles ignores the air war in the West that tied down upwards of 75% of the German air force and the bombing campaign that did great damage to German industry and transportation.
Yes, 75% of the German ground forces were deployed on the Eastern Front - and its questionable whether the Allied landing would have been successful against this massive ground force of over 100 well trained, equipped and experienced divisions in a Western campaign.
So I think fair to say the Western Allies would have been forced to the peace table and WW II ended as a draw - but likewise the same thing would have happened to Russia without the Western Front.
That’s another astonishing fact. When the Nazi army invaded the USSR, almost everything was horse-drawn. That Army moved on horseflesh more than anything else, more than most people realize.
Our Jeeps and 4x4 trucks performed incalculable service. We also kept a steady stream of aircraft flowing in across Alaska and through Siberia. Hey twenties, b-25s, p-40s, P39, p63, c-47.
By that time, German Air Power was virtually non-existent.