Supercomputer and undergraduates
IMO irrespective of country and level (undergrad/Masters), if you can run a job on a High Performance Computing cluster or a supercomputer, you should mention that on your resume. And sure, you can use that in your statement, especially given the fact that not many have access to it, you had the rare opportunity and made full use of it.

In my experience, I haven't seen many undergrads here in the US that can run a job on a HPC - not without prior computing experience!

All the best to you!