More Quickly / Faster

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Feb 14th 2012 02:27 adverb-selection
(A) Some people believe that women master foreign languages more quickly than men.
(B) Some people believe that women master foreign languages faster than men.


I think (A) is correct but (B) is not.
Is my understanding right?
And if so, would you mind telling me why you think "fast" is inappropriate here?