So red is green? (Oracle's ads)

One of Oracle's blogs includes the post Save the planet, dump your Teradata. Excerpt:

Softbank Mobile Corporation, a fast growing mobile telecommunications provider based in Tokyo, Japan, has gained eight times the data warehouse processing capacity while replacing 36 Teradata racks with just three Oracle Exadata racks.

Unfortunately, neither the blog post nor the associated case study (PDF) stated the model number or the age of the Teradata system that was being replaced.

I'm sure that Teradata can counter that one of their new systems can replace a boatload of old Sun hardware.