The penultimate sentences at the bottom of the article should be at the top. (But then again, if they were at the top, people might skip reading the rest of the article.):
>It’s important to remember, however, that this paper only considered brain anatomy. It doesn’t contradict studies looking at brain function, nor does it relate to microanatomy or neuropathology (i.e. microscope work.)
The less provocative title would have had a more qualified adjective such as "Most Autistic People Have Normal Macro-scale Brain Anatomy"
The article was talking about "gross anatomy" by comparing sizes of MRI scans. There can still be other microscopic brain differences that MRI can't show such as brain wiring. The following TED has some visuals to illustrate it. (I don't think the speaker from MIT did the best job explaining it but his graphics are interesting.)