when you use the term "legend" a case can be made even if duncan is the greater player that Kobe is the greater legend ... From Webster's:
leg·end
ˈ(lejənd)
noun
1.a traditional story sometimes popularly regarded as historical but unauthenticated.
"the legend of King Arthur"
synonyms: myth, saga, epic, tale, story, folk tale, folk story, fairy tale, fable, mythos, folklore, lore, mythology, fantasy, oral history, folk tradition; urban myth
"Arthurian legends"
2. an extremely famous or notorious person, especially in a particular field.
"the man was a living legend"
synonyms: celebrity, star, superstar, icon, phenomenon, luminary, leading light, giant; More
adjective
1.
very well known.
"his speed and ferocity in attack were legend"
Not sure if you were describing a legend in the current NBA (even now) many names that would come up first before Kobe. that doesnt help his shooting % but poor word choice on your part ...