By Malathi Nayak SAN FRANCISCO (Reuters) – Microsoft Corp has sold more than 2 million Xbox One video game consoles since its November 22 launch, catching up with rival Sony Corps PlayStation 4 released a week earlier. The U.S. software giant on Wednesday said it took 18 days for Xbox Ones global sales to surpass 2 million. Japans Sony last week said it took 15 days for PS4 sales to cross 2.1 million. The Xbox One, on sale in 13 countries, is selling quicker than its predecessor, the Xbox 360, and is sold out at most retailers, said Microsoft spokesman David Dennis.