Ok First things first. Then etc.
1) Game has changed since your Pelton game, and your win by losing strategy no longer works.
for the ect.
2) Yep, total manpower of Lgrad and Moscow area is 170. Nope, that is not 10% of manpower.
3) I have not one but two test games v superior players. As of Jun '42, after losing Lgrad, Moscow, Voronezh, Rostov I have OOB over 8M and excess (barely) in manpower pool. Approx toe of average on map unit is about 85+%. My OOB goes up every week,and, there has been not one week where I have zeroed out on manpower, a few times I even tried to zero out by juicing up the refits, always in the black. I like to be careful with my truck pool so I won't max the refit every turn, probably ever.
My point with this is to prospective sov players, don't despair and quit if you lose all this stuff, you have enough.