I'd say it makes more sense to make a fantastic start than a memorable ending, but then again, if the gameplay is compulsive, the memorable ending is what the player will take away with them ...
So if the developer /publisher is only looking for a quick score, then a great splashscreen is all they need ... though one would hope that game reviewers play most if not all a game to decide whether the game is worth playing, finished and memorable. (How are those pigs: all fuelled up and ready to fly?)