If you counted just the American/NATO loses yes if you counted all sides and civilians killed by attacks,suicide bombings,and reprisal tribal killings in Iraq and Afghanistan the cartel drug war killings are lower by thousands not to say that there is much violence occurring there.
For the enemy in Iraq the number is around 28,736-37,120 and 113,728 civilians died in Afghanistan Taliban loses can only be guessed at but it is well over 10,000 around 14,700 civilian deaths since 2001. The Mexican drug war the estimate for all sides and civilians is around 54,927 bad indeed but it could be much much worse 54,927 is close to the loses of Americans during the 10 years that they consider the Vietnam War the cartel war on the other hand has only be "hot" since 2006 though they have been fighting each other to some extent since the late 1980's.
http://en.wikipedia.org/wiki/Mexican_Drug_War
http://en.wikipedia.org/wiki/War_in_...2%80%93present)
http://en.wikipedia.org/wiki/Iraq_War