I don't think it's really fair, for a variety of reasons. Generally, one might say that Communism won many battles, but the Soviets conclusively and decisively lost the war.

The first is that many of the Communist regimes (especially China and Vietnam, but to a certain extent Cuba and Czechoslovakia) were not really "victories" for the Soviets in any appreciable fashion. Almost as soon as Mao was secure in his power, and Stalin was dead, China became a much less controllable state for the Soviets. Certainly the perception in America that China had fallen to Communism contributed to the idea that China was under the control of the Soviets, but this was never really the case. Vietnam is another wonderful case to look at, because this was far from a Soviet victory in any sense. Ho Chi Minh was never a Soviet or Chinese puppet, and while both states contributed to North Vietnam's eventual victory, neither the North nor the reunified Vietnam was ever a bona fide puppet. Realistically, only the Eastern European nations were "good" Soviet victories, and even there (Czechoslovakia, Yugoslavia) you have a good deal of clarity that the Soviets were either not in control at all, or only in control due to massive and constant repression. In the case of Cuba, Castro was a huge headache and liability for the Soviets, he refused to be controlled and was a master at playing the game.

You brought up Afghanistan, and I've never actually seen anyone argue that the communist regime there was any kind of victory or benefit for the Soviets. Indeed, Brzezinski later claimed the Carter administration helped push the Soviets into Afghanistan, believing it would bleed them white (whether Zbigniew was fibbing or not is another story).

I want to look at some American victories after one little aside. While it is very tempting, and probably most accurate, to examine the Cold War as a competition between the U.S. and Soviets, it is also integral to note the other factor. That factor is the rest of the world. Western Europe, Africa, Latin America, Asia, and all the countries and peoples therein were not passively waiting to be included in the conflict. Some tried to actively avoid involvement, others (mostly the Europeans and Africans) worked just as actively to manipulate the super powers and attempt to direct their actions, and still others (the non-Indian Asians and Latin Americans) did all they could to try to get the Soviets and Americans to simply leave them alone - this often caused an issue of calling in help from one to try to remove the other only to find that they were quite unwilling to leave.

So, American victories in no particular order (keeping in mind that in the interest of a bi-polar system I'm conflating achievements that clearly require the input and action of the parties within the "American sphere" into a simplified American achievement): the Internet, united integral and essentially non-threatening Germany, rebuilt and independent Western Europe, Capitalism, Consumerism, Space Race, Turkey, Greece, literally almost all of Latin America, Japan.

Now, if you're talking about literal battles in which one side or the other basically took over a nation and imposed a satisfactory regime...then I'll go with Latin America again (Guatemala, to an extent Chile, the Dominican, etc.), South Korea, Iran up until the fall of the Shah, and there are of course others.

I guess my argument is that the Cold War was far from a contest in which the Americans/West reacted and the Soviets acted. The reverse is actually more true.

TL;DR Here I'm including not just America but the entire non-communist aligned world under an American-centric label...Culturally, economically, politically, and militarily, the West did not simply outlast the Soviet Union, it ground it into dust and then watched it blow away in the wind.