@Seth Yep, it could. The system did what it needed to do. (Because even analyzing a previous game with the same line as your current one isn't exactly fair, you aren't just using your own knowledge).
'+N' means that white has an advantage. 'N' is a way to express the advantage in pawns, i.e. +2 means 'two pawns' advantage but that doesn't have to be literally two pawns.