Well it's fan mania pages,so it's all about fans,not consistency and latter results.
Marcos is very charismatic and a great fun to watch enjoying playing,whether winning or losing.
And instead of asking if he deserves his fan mania page,why don't you complain instead that other guys don't have their own??Nalbandian,Ljubo,Blake..
I believe that they should create more fan mania pages for other popular players.