I can't really see why you would need a supercomputer to do the analysis they did (it shows SC centers are getting desperate for users; I wouldn't even have been allowed to run this code on a supercomputer when I was an academic, because it didn't need interconnect for strong scaling.
The article is fluff.
98% of all bioinformatics is done on "supercomputers" or 'high performance computing environments" saying the researchers used supercomputers to analyze the expression data is like saying someone used a shovel to dig a hole.