58,200 if you count the hundred + Canadians who enlisted in the US. Sadly that number is just a mouse fart compared to what the Vietnamese suffered. Remember they First Indochina War; and the millions that died there.
Add those who died at the hands of the Japanese in the greater 2nd Sino-Japanese War (July 7, 1937 – September 9, 1945) to the that millions died of violence or famine in Laos, Cambodia, and Vietnam from 1945 to 1989, floods often aided in intensity by protagonists including in Vietnam where the US seeded the monsoon clouds from 1967 to the public found out about it in 1972.
https://en.wikipedia.org/wiki/Operation_Popeye
There were a lot more causalities and war dead than those involved in Afghanistan and remember the Afghan's defeated the Russians and are still persisting in resistance; that conflict is not over even if any hope of resolution. The point is every guerilla in Afghanistan isn't striving for the same reason; most just want intruders out of their little place of the world and don't want a unified Afghanistan.
The reason the OPs poll is so one sided is because the difference in magnitude is so overwhelming that only a clueless can equate less than 2,500 Americans to 58,000 or a total killed Afghans and Americans (military and defense contractors and other outsiders which is less than 100,000 to totals that are a minimum of 25 time greater. All loss of life has a price; I don't want to trivialize the sacrifices of those involved with Operation Enduring Freedom but consider these statistics:
http://www.britannica.com/event/Vietnam-War
brainhulk the Afghan caves are for hiding from drones and fighter jets; the guerrilla fight mostly takes place on the government's turf. The last thing the cave dwellers want is to be discovered at home. If you can find a Tunnel Rat; there is a big difference between eradication of cave-dwellers and entrenched Vietcong.
About 1980 (
December 1979) Russian started the fight in Afghanistan which has continued for 35 years; The French started the fight in1887 in Vietnam which continued till late 30's when the Japanese to the role of invader for 7 years; then the French again until 1954 then mainly the US till Saigon fell at the end of April in 1975 (88 years); the Vietnamese have had more time to suffer and profect their brand of guerilla warfare. .