Noooo! If I understand correctly that is the secret ending ! The story does continue a lot after that, more than an hour of Gameplay. You just got so good you've done a perfect win - winning without losing a round with Matt which leads to the said secret ending.
But I now realize that it may lead to that feeling if we are not clear enough about it.
To make it clear. Winning the two rounds in a go with Matt leads to a secret ending.
Winning 2 rounds while having lost 1 continues the story.