Was Lillian Gish or Mary Pickford more successful?

I would have originally said Mary Pickford, but then I read AFI's 100 Years...100 Stars link is here http://en.wikipedia.org/wiki/AFI%27s_100_Years..._100_Stars It puts Lillian Gish as #17 of the most Successful actresses of all time, and Mary Pickford #24. So that made me wonder if Lillian Gish was more... show more I would have originally said Mary Pickford, but then I read AFI's 100 Years...100 Stars link is here
http://en.wikipedia.org/wiki/AFI%27s_100_Years..._100_Stars
It puts Lillian Gish as #17 of the most Successful actresses of all time, and Mary Pickford #24. So that made me wonder if Lillian Gish was more successful, obviously Lillian Gish had a longer career as she was one of the few silent film actresses that had success after the silent era ended. Her career lasted from 1912-1987, but Mary Pickford was also considered America's sweetheart of the 20's. So I was just wondering if anybody who would know more than me can give any insight.
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