Interesting information. There's definitely a bit of marketing going on there, but it seems that they have at least some peering. Without concrete public evidence otherwise I'll concede that Google must have great peering.
From a network administrator's point of view, they're an absolute joy to work with too.
If you're share any IXes with them at all, they'll peer with you. Private / appliance based peering has additional requirements, but that's par for course.
