Not only did Court win 24 single slams, she won 64 slam titles in all. These are both records that are unmatched by any other player, male or female. She also has numerous other slam records and overall records that are either matched or standalone (unmatched). She has the record for most single titles with 192 and has the record for Open era singles career winning percentage with 91.4% (593-56).
Considering total career achievements, Serena does not come close to the likes of Steffi and Margaret. While Serena is certainly one of the most talented players of the modern era, her career achievements do not stack up to these players. Even Chrissy and Martina N have career achievements that surpass Serena.
Every tool is a weapon -- if you hold it right. (~Ani DiFranco)