If anyone is still interested, here's my two cents on this matter:
I agree Einstein was intelligent or "Smart", but i certainly don't think he
was the "smartest" person on the planet.
He was an aedequate Physicist and Mathematician, but he knew plenty
of people who were better and could help if he was stuck in one of these
areas.
Albert Einsteins' gratest asset was his Imagination! (he said so himself).
Consider: Using existing Physics models, and mathematical equations does not help you formulate that which does not yet exist! If it did, then that which is not yet known, IS already known, just not put into words yet.
That is hard to understand in itself.
What I mean by the above, is that to imagine something (with some previous knowledge of course) and then to use existing methods to prove or disprove something, is the only way to advance. An open Mind.
Education, Degrees PhD's etc are really only proof that you are capable of reading, and retaining memory of something. I am guilty of this myself.
But to be a real genius, you need to look past what's already right in front
of youre face, and open your mind to match the vastness of the Universe,
that's the only way to understand it.
That is what put Albert Einstein a cut above his peers.
If you finished this little rant, thanks for your patience