Lubuntu Keeps It's Promise - Fastest Ubuntu Yet

When the first Lubuntu ISO came out (LXDE based Ubuntu), it was said that it's purpose is to be faster than Xubuntu:

The Lubuntu project started in March 2009, with the purpose of creating a lighter and less resource demanding alternative to the Xubuntu operating system, using the LXDE desktop environment. The ultimate goal of this project is to join the ranks of Kubuntu and Xubuntu and become an officially supported derivative of Ubuntu.

And many argued, but now, Linux-Mag published some data which compares the memory used by Ubuntu, Xubuntu and Lubuntu in 2 ways: