I think it's too early to tell the outcome of things in Afghanistan. I think that our invasion of Afghanistan can't be compared to Russia's. Russia wanted to take them over, we just want to root out a terrorist network and support more peaceful government factions and their efforts to unite the country. I think we'll never root out all of the Taliban, but I think we can get them beaten down enough to give the more peaceful factions the edge over them and keep them from power.
Lastly, Afghanistan's significance from an energy standpoint originates from its geographical position as a potential transit route for oil and natural gas exports from Asia to the Arabian Sea. This potential includes the possible construction of oil and natural gas export pipelines through Afghanistan, which were under serious consideration in the mid-1990s. The idea has since been undermined by Afghanistan's instability. Since 1996, most of Afghanistan has been controlled by the Taliban movement, which the United States does not recognize as the government of Afghanistan. This is why BILLIONS and BILLIONS of energy industry dollars stand to be lost if someone doesn't uproot the Taliban and install a stable government in Afghanistan. The nation is very important from an energy export perspective. That's the real reason why the Russians invaded it in the first place.
If we pull out of Afghanistan, Russia or some other country will justify another invasion hoping that we weakened the Afghani will and military structure enough for them to get this most prized chess piece.