The article is overstating the similarities between Roosevelt's policies and Hoover's. The Wikipedia article which I linked covers it pretty well. Some of the main components of Roosevelt's policies were:

• Ending the gold standard
• Regulating the banking/finance industry, including creating the FDIC (which put an end to bank runs) and the SEC
• Creating a safety net (e.g., Social Security and the precursor to food stamps)
• Expanding & creating more public works / job creation programs (Hoover had some, FDR employed as much as 7% of the workforce)
• Labor market regulations, including prohibiting child labor, creating a minimum wage, and establishing a 44-hour workweek

You could divide the consequences of policies into three categories: getting the country out of the Depression (improving the economy, or making it worse), getting the country through the Depression (coping with the bad economy), and making lasting changes to the government and society. Most of these policies did more for the latter two.

For getting out of the Depression, the most important things the government could do were 1) monetary policy, and 2) increasing total government spending and debt. Getting off the gold standard was the key step for monetary policy (there were also various missteps by the Federal Reserve, including many in the late 1920s and one in 1937). Hoover increased total government spending and debt somewhat and then stopped; FDR kept them relatively flat until WW2 broke out and then increased them massively.