Twins are Insane

The Mets are going to get Johan Santana for four prospects as long as an extension can be worked out with New York. Are the Twins insane or what? Santana has been one of the top pitchers in the Majors for like the last five years. The Twins aren't even going to get a big name out of this? The deal is reportedly for six years and $150 million. I just don't get it. These prospects better be super heroes!