No-one's actually denied that the Tories won. There's a context around the statement, however, that's it's a bit mischievous to ignore. Likewise, the bald statement that Labour lost, whilst true, lacks the context that they did overwhelmingly better than most people expected, they are not the basket case that most people predicted and that Corbyn certainly isn't toast, as a good many people thought he'd be. Intelligent discussion doesn't ignore these complexities.