DOW JONES NEWSWIRES NYSE Euronext (NYX)'s chief executive on Monday expressed disappointment at losing out on getting Facebook to list on the New York Stock Exchange but said it put out a "comprehensive proposal" and he was "proud" of it. Speaking to Fox Business Network's Charlie Gasparino, Duncan Niederauer also admitted that he didn't expect the deal to merge the NYSE and Deutsche Boerse AG (DB1.XE) to fall through. "It never occurred to me that the EU would come out with a completely contradictory definition of the market. And if they hadn't, the deal would've gotten approved," Niederauer said. When asked about the possibility of another "transformational" merger, he said it would be a difficult endeavor for anyone in the industry at this point and doesn't see a complicated cross border merger in the next 24 months. Website: http://www.foxbusiness.com -Dow Jones Newswires; 212-416-2900