Then there's the issue of execution. Cramer said that GNC seems to have a better understanding of what its customers want, catering more toward sports products that keep customers coming back regularly for more. Finally, when looking at these companies' valuations, GNC trades at just 16 times earnings with a 24% growth rate, compared to 21 times earnings at Vitamin Shoppe with a 21% growth rate. That's why when it comes to the vitamin market, GNC is both the better company and the better stock, Cramer concluded.
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