Best team on the night (barely) won.
Tonga could have won had they had more experienced halves. Foster has talent but he is young and made bad decisions. Too often he tried to break the line himself when should have spread the ball to Tonga's brilliant second rowers and outside backs when there were opportunities. Also Tongan hooker's kicking was poor. Finally, Fisi'iahi made two big blunders.
If the above mentioned can rectify their mistakes, and especially the halves can improve their games, Tonga can still qualify for the QFs. But they have to beat Italy, which won't be easy.
Expect Tonga to beat Cook Islands.
Expect Italy to beat Scotland?
Tonga vs Italy will be awesome. If Tonga win then for and against will matter.