There is a case to be made that the most extreme outliers by one measure are the ones for the Kosovo war, in the direction you imply. Still, I don't think the difference is statistically signnificant. And the figure of 8,000 Serb civilians happens to be the largest estimate you could possibly find, and it is taken from a different source to the others. Wikipedia lists 5,000 as the estimate of the total number of Albanian casualties including KLA combatants.

Most economists teach a theoretical framework that has been shown to be fundamentally useless. -- James K. Galbraith