I understand that, and it's frustrating. The word is "spectrum." No two people will have the same abilities, talents, life experiences, good/bad teachers, good/bad parents, problems, issues. It's not to say that Olivia is "less capable," she is just different. Her brain isn't wired like Sharnae's (whom some on this forum feel isn't autistic or "autistic enough" because she reacts in some unmeasured "acceptable" manner).
I really felt this series did educate many, many viewers as it set out to do...but I'm saddened to see that yardsticks that shouldn't be used in these instances are still presented. There are MANY reasons to think Olivia is less capable in some areas than other participants. It's unfair to compare one to another.