I just realize this as it is way too senseless to me now.
The war happen so quick. I understand that the Soviet did manage to overrun the Allies, but the Allies fight valiantly to the end.
Even though Yuri's PsiCorps are there to hasten the war, it doesn't still makes sense why this "unrealistic" war just sticks to "1982" with afterwards the MO War happen 2 years later.
Pardon me, but it's just kinda make no sense. (And hopefully the devs will fix that)