My apologies, I meant to link to the list of processors in that article -- by pure count (and, anecdotally, most often), most Sandy Bridge processors are Core processors.

The text "Upgrade To An Intel® Core™ Processor" does appear on Intel's Celeron page, so there's that. http://www.intel.com/content/www/us/en/processors/celeron/ce...

(And, for what it's worth, I'm not completely defending Google on this, just pointing out what their reasoning could be.)