11 Crimes committed with Guns from "Gunwalker" Program

The information is provided here. In some sense, with 11 crime scenes from 2,000 guns SOLD to violent drug gangs, wouldn't you think that there would be more than 11 crime scenes? Is it because the American guns aren't used by drug gangs? Is it because these guns can't be linked to crimes? I don't think that either of these options don't make the government look good.