Well, Docker is big news and people are interested in what the performance impact of "using docker" is.

Whether it's accurate or not, people associate Docker with the functionality if facilitates. (i.e., cgroups, namespaces, etc.) so i think it's valid to show the performance impact of running an application from within docker.

Based on my data, they're not 1:1 native performance. I suggest you consider the data before dismissing it.