The other table has newer studies than 2015, where nuclear is not cheaper, but you’ve only pointed out the column where they found it was cheaper 10 years ago. Wind and solar have gotten cheaper to produce, and nuclear more expensive. It is not cost efficient compared to other modern options.
According to the article you have provided, it has… The first figure under Global Studies shows nuclear prices have increased, and the general trends of the various studies in the two tables show an increase over time.