Are you able to say anything about the scale of their hardware? It says "3x hardware" but I'd love to hear how big that ends up being, at either the Oracle or Postgresql size.
For PostgreSQL we use commodity servers and right now they are not really efficiently balanced (i.e. on some hosts we don't have enough disk space but other resources are utilized ~30%). So we are working on improving that. But I can't tell you exact numbers of hosts for Oracle or PostgreSQL (which is actually ~x3 from Oracle hosts number :)).