If war broke out, NATO would most certainly win, for reasons already stated. However the Warsaw pact disintegrated on its own, and NATO is still going strong today, so I think the victor in that respect is clear
Not Really, you underestimate the Warsaw Pact, For Reasons Below.
1. NATO Countries had Volunteer Armies, which meant they already had less Manpower then the Pact countries, the Pact Countries, however had Conscripted/Drafted Armies, which meant they had double the manpower the NATO countries had. Outnumbered atleast 2-1 on the Berlin Front, they would have had to retreat to a more defensible position where they would wait for reinforcements, that is assuming NATO started the war, If the Warsaw Pact started the war, their doctrines for going across the Wall, meant a surprise attack. Just By the Surprise Factor alone the NATO Troops would have to retreat. (Again,
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2. The Warsaw Pact had a lot of BMP's which also meant, a lot of ATGM's which could reduce a Abrams to dust, Also the shear number of tanks they had, could do some damage.(Alot of Damage)
(Im Still not done yet,)