Say it's fifty-fifty on a quite tense board, where all the remaining scorings are about tied now but may turn into either side's domination pretty quickly.
And say I'm USSR so I'm the one to lead by a few VPs now but my opponent has the "hammer" (for those who watch curling), particularly the very last game move (for those who don't), which can nullify my advantage (I used to estimate the US privilege of the last play as 4.5 VPs).
It also depends if Chernobyl came out. That can kill USSR fast.
In case you described above it's really personal preference, there is no firm answer.