Quite griping the Saints Can’t Draft

I do not understand this statistical analysis. How is "draft capital" determined? Is it determined by the number of picks a team originally had, or the number of picks actually used? Does it consider round and the number in each round where a pick is made?

What is "draft return" and how is it determined?

Unless the terms are clearly defined, this analysis has no significance.

And the results make no sense. In percentage terms, our 2012 draft, featuring Akiem Hicks and Corey White, was our best draft since 2010? Our 2013 and 2019 drafts were better than our 2016 draft, with Rankins, Thomas, Bell and Onyemata?