The Snoopy Dog Clog Crocs Crocband Shoes, Men, Women, Model has been that characters particularly associated with the licensed character (Doctor Octopus, Aunt May, J. Jonah Jameson, etc) were included in the deal, particularly where those characters first appeared in the Snoopy Dog Clog Crocs Crocband Shoes, Men, Women, Model comic. So Fox, for instance, got Galactus and the Silver Surfer along with the Fantastic Four and originally held the Kingpin rights as part of their Daredevil deal, despite those characters having been featured across the Marvel line many times. I think Sony would have a hard time arguing that the Jessica Drew Spider-Woman was particularly connected to Spider-Man in the same way. According to legend, the reason Marvel created Spider-Woman in the first place was to prevent others picking up the name as they realised that it would be a separate property to Spider-Man. That said, there are always exceptions. Quicksilver and the Scarlet Witch both debuted in X-Men comics, but later became members of the Avengers, resulting in an agreement between Marvel and Fox that each could present their own versions, which is why Quicksilver appears in Avengers 2 as well as X-Men: First Class and Age of Apocalypse.
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