Uncapped score differential is a poor tiebreaker. It leads to people extending games just to maximize score differential, instead of ending as soon as possible. And in case of abandoned games (due to time out), you end up with +1 score differential, even if you were ahead by 100 points.
Where the tie is between 2 players, head-to-head results as tiebreakers would be much better.
Where the tie is between 2 players, head-to-head results as tiebreakers would be much better.