This honestly makes no sense. I really hope Google does win on appeal. A comparison shopping service is nothing more than a generic search engine with filters and aggregation. Does the EU actually employ anyone in the courts that understands technology? Comparison shopping was a completely logical (and obvious) extension of Google's general search engine. It may or may not be a separate "market" (whatever that means) but it is the same technology so why wouldn't Google promote its comparison shopping in search? It does the same with Image Search and that is no different (if anything Image Search is more different than comparison shopping from generic search).