Well you CAN so long as you keep in mind that diff, ie 97 normal years is a pretty 100 years to muslims because they couldn't figure out how long a year was despite apparently having some kind of math genius period during the dark ages.
Anyway, given that the 10 year diff is disputed, using it to argue for Aisha's age on the basis of her half-sis age seems a little shaky.
What is your criticism of the hadiths I cited? Was that other Muhammad the 'crazy guy' you were talking about? Who called him that?
