It doesn't make sense. The bear/tiger question isn't equatable to Arias being attacked by a stranger vs. Travis. It's not logical. A juror who isn't reasoned by sound logic may be more willing to believe nonsense if they're compelled emotionally-- and if that's the case, it's more likely they'll hold up deliberations. Ever met someone who just believes something is true no matter what facts exist to the contrary? They're unshakable.
If I'm reading it right, it sounds like they think she has PTSD and buy what Dr. Samuels was selling, ie "trauma is trauma". If they think she has PTSD, it's more likely they don't believe her Borderline Diagnosis, and do believe her "fog" story. It's problematic.