This week marks the controversial showdown between two of the most famous MCs in the industry [tag]50 Cent[/tag] and [tag]Kanye West[/tag], as both of their solo albums, “Curtis” and respectively “Graduation” are being released on the same day 9/11. A while back Fiddy sparked a psychological and marketing battle, between him and Kanye, when he promised to quit solo music if West outsells him on the release day. Amazon reports that Kanye is ahead of…