You misparsed that line, it's talking about the time to complete a single hash rather than the amount of relative time to find a collision. SHA256 has 128 bits

You misparsed that line, it's talking about the time to complete a single hash rather than the amount of relative time to find a collision. SHA256 has 128 bits of security to SHA1's heavily wounded <80 bits, there's a significant increase in complexity between the two.