This link is over 8 years old, but it still might be relative....
http://www.metrowestchess.org/Community/Knowledge/Chess_Programs/ChessBase/CB_Info_Fritz_or_CB.htm
I have a copy of Fritz 13 on the way actually. Never touched CB. What are you looking to do?
I have been recommended Fritz 13 and Chessbase by many people. Some say that you don't really need the other if you've bought one while some say that I should buy both. So what exactly do these programs do? Considering the fact that chessbase costs nearly twice as much as Fritz, I would like to know more about the features that each program has and how they are different.