VictorD7, how we report on how won or lost a war depends on how informed opinion sees it.  As your source says, "It is generally agreed that the War of 1812 ended with no side having lost or gained".  Obviously we may agree or disagree with general opinion.  One could say that the US lost because it failed to conquer Canada.  As Brock said, "“We may teach the enemy this lesson: A country defended by free men devoted to the cause of their king and constitution can never be conquered…”