Yes, you're exactly right, there is as much variation in autistic people as there is in people in general. The personality of the individual still controls it all.

Someone described it very well once. You get many different makes and models of computers for example (which would represent different people), but autism is simply a different operating system. It's like people using Windows (e.g. neurotypical) vs. Mac (e.g. autism). However, computers using Mac are very different amongst one another (as each person owning a computer uses it for their own personal things, no two computers are the same in terms of totally, maybe only the hardware in cases, but personal files, etc.).