You shouldn't deceive someone for your own benefit.
Jake has a friend, Shane, who is trying to choose between two video games to buy.
Jake wants Shane to get the game he also owns, so they can play together.
Jake gets Shane a copy of the game that he has, so they can play together.
Jake tells Shane that the other game is not well made despite not having played it.
Shane gets to own and enjoy both of the video games.
Shane misses out on a quality game that he would have enjoyed.