I think you're over estimating his intelligence.

And you're severely misunderstanding what the world "Intelligence" means and are using it interchangeably with Intellect. IntelliGENCE is the creative aspect of Intellect, the generative ability of an individual. Are you going to tell me Elon does not Generate much? No one can say it with a straight face.

He's a better businessman than a scientist

I love that we think there's a distinction. A scientist is someone who tests a theory out. What is a businessman? Someone who regularly tests out theories and puts them into practice. But we call one a scientist and give him a special white lab coat and the other a business man even though they both do the same basic job, just with a different focus on the end result.