[Palio di Siena]

Some sources say that 80% of German forces were deployed to the east.
Not inconcievable that DDay would have been in 1945 rather than 1944 if the wermacht were evenly deployed.
I think allied air superiority would have carried the day eventually.
I think the 800,000 Germans who surrendered at Stalingrad were more than were deployed on the western front.

[BroJoeK]

"I think the 800,000 Germans who surrendered at Stalingrad were more than were deployed on the western front."

Sorry, I think you let an extra zero slip in there -- 80,000 Germans surrendered at Stalingrad is closer to the mark.
Of course, if you expand your definition of "Stalingrad" wide enough, you do eventually reach 800,000 but that is total casualties for the entire period, including Italians & Romanians, not just the final surrender.

German western front troop strength peaked at around 2 million in 1944, with all told about 8 million Germans served there, of whom one million were killed or wounded, four million captured.