A great point Grasshopper. But I’d respectfully argue that once the commitment to Barbarossa had been made, it was a series of mistakes in that particular campaign that prevented Germany from being successful.
This is a Sealion thread, so I hesitate to elaborate… but will anyhow!
1. The reliance on Italy in the Balkans set back the timeline of Barbarossa. That lost time resulted in a failed capture of Moscow.
2. The lack of preparation for a winter war doomed hundreds of thousands of men, and was a factor in losing initiative in the winter of '41/'42.
3. The insistence in the fall of '42 to invest, rather than bypass Stalingrad. It turned into a meatgrinder - and played to Russia’s strength in manpower. Russia lost a million soldiers, and Germany over 300,000… but Russia could afford to and Germany could not.
4. The stubborn attack on the Kursk salient in July '43. It was the most heavily defended tract of land in the history of warfare, the German High Command knew it, and Hitler ordered it anyhow. It was a total failure, and the final breaking of Germany’s offensive force. From there it was a slow and brutal end.
5. Throughout, Germany was riddled with internecine struggle - competing silos, competing interests. The factions fought amongst themselves, which Hitler partly cultivated to keep the focus off himself. Russia had no such problem… a single, streamlined Dictatorship - ruthless and unyielding.
6. Germany relied on technology, and complexity in their engineering. Armored equipment was notorious for breaking down, and the vast number of different chassis/engine/armament types became a logistical nightmare. Russia’s forces had the ability to cannibalize their own vehicles to maintain their armored forces… and the T-34 and subsequent offshoots were notoriously reliable.
In essence, Sealion wasn’t attempted because of the misguided change in strategy of bombing population centers rather than focusing on destroying radar, airfields, and planes/pilots. Secondly, a lack of shipping factored in. Even marshalling all available military watercraft and merchant shipping, the infrastructure simply wasn’t there to invade. This is well-chronicled fact. If Germany had delayed with Barbarossa to strengthen Sealion, Russia would have slowly become more powerful, and the US would continue to refine and perfect the shipping of supplies to Britain, and crept ever closer to entering the war.
I don’t believe that Germany’s timing was off - very specific choices doomed the Eastern Front.
Was that off-topic? :)