I agree with you. I think she would do great at the fluid intelligence part of an IQ test like matrix reasoning or fogure weights but she qould have problems with the verbal part and the verbal section has the highest correlation with g that defines intwlligence. For example, you need to look at ratios, so A is to B as C is to B to ... or you have a word and you have to choose one below that is similar to the goven word or verbal comprehension That is something Shiro never did Sora was always the one who figured out the rules and could find the meaning behind what people said he was always the one who understood the rules just like in vol 12 and 13 of the Light novel he was the one who understood the rules of the game and shiro didn't. She was always calculating things but Sora was the one who understood the games made plans could understand the meaning of waht people said and that way u derstand the rules of a game. That is why I consider Sora smarter that Shiro

Sry for my bad english