The score was 18-13, and Tony worked hard to get back in the game and possibly cut the lead to 18-14. He fired at a 2-railer, sending the CB four rails up table and leaving Dennis a cross bank that he made to win the game. He couldn't have won the game with that two-railer, yet he took it anyway.
Dennis makes mistakes too, but he's generally not overly aggressive. He also has a bit more patience than Tony, and his patterns are most definitely better. Tony runs into balls unnecessarily.
The score reflects their respective skills.