I actually don't see 3 pinterest results, maybe there is some personalization at play. However you can't compare results based on just one search query. Not to

I actually don't see 3 pinterest results, maybe there is some personalization at play. However you can't compare results based on just one search query. Not to mention that your query is probably quite common. It's easy for a search engine to return good results for common queries. The difficulty of search is in the long-tail. Bing invested billions of dollar into search. They had traditional advertising including celebrity endorsements. They were unable to compete with Google on quality. Google has large team of engineers working on search quality and they evaluate each change using human raters.