Has the marketing of Grand Theft Auto 4 been successful? - business work

I think the marketing of Grand Theft Auto 4 has been tremendously successful. In the first week of release Grand Theft Auto 4 has sold 6 million copies globally generating over $500 million in revenue. In the United Kingdom alone, the game sold 609,000 copies on its first day of release, making it the fastest selling game and a 24 hour period of time within that region. The previous record holder in the United Kingdom was Grand Theft Auto:San Andrea which sold 501,000 copies within the first 24 hours. Although Grand Theft Auto sold many more copies than the previous Grand Theft Auto game, I don't think it was all because of the marketing. I think a factor that made the game sell was the previous game attracted and grabbed many consumers and made them loyal to the game. Another factor was that many consumers would have used their common sense, they would think of Grand Theft Auto:San Andreas and instantly think great game, then they would think of Grand Theft Auto 4 and think new game, new console, new character, better graphics, better accessories and better game play so they would buy the game. Even though I said that the marketing itself would not have made such an impact unless the other attributes like brand and loyalty were there to aid the marketing