From a UK perspective, the duration issue is an interesting question - IIRC sometime in 2012 there were "revelations" that the UK had barely had enough air to air missiles to fight a week. The counterpoint to this was that this was still enough to decimate (if the missiles worked!
) the Soviet squadrons ranged against the UK and nearby shipping. This munitions issue would probably effect the RN, too.
We also have to remember that at least one major class of RN warship (Type 42) was not actually intended to fight in a high threat environment. RN forces would probably have spent most of the conflict trying to *avoid* contact!
As a side note on Soviet land forces - post-CW we now know a little more about how the Soviets plans differed from our assumptions. I have read that in reality, the Soviets would only deploy a small fraction of their forces to the front line at a time - the large numbers were because they planned to rotate entire units after a short period on the front line, which was in contrast with the NATO forces which would have tried to resupply units. I'm not sure how this would have effected comparative performance.
RP1