The smartest type is: I/E (0%/0%), N/S (0%/0%), T/F (0%/0%), and P/J (0%/0%). All other types lie on a continuum, which indicates how much farther they are from *that* type. I'd honestly felt I was extremely close to *that* type when I first discovered, and investigated MBTI back in Spring '08. I wasn't on any forums, and posted my thoughts on YouTube, where it initially occurred to me what type is the best ideal for *existence*, in general. Clearly, by observation, if you're *that* type, you aren't swayed by general existence, which does *things* to people, otherwise. Unfortunately, there was no way of fitting in with that fundamental analysis, which I called it, so I decided I'll stick with one of the types. Eventually, that's how I settled with ExTJ. When I first joined this forum in January '09, I said I only *tended* toward ENTJ, which seems realistic enough.
You have different kinds of "smart". S's are smart in a way that is measured by grades in school. N's are another type of smart. If you put all the types together, then you'd have the smartest group of people. Kind of what Mace attempted actually