Facebook:

There is no standard scale for measuring IQ so different tests give different scores. What is always comparable is if you are in, for example, the top 5% on this test you will probably also be in the top 5% on another test. This test uses one of the most common scales, but UK Mensa tests and many other tests use different scales.

CF.:

Think you are smart? Well, if your IQ is 130, that puts you ahead of 98% of people.

http://www.increasebrainpower.com/iq-scale.html

 Of course that means there are still 120 million people who are smarter than you (the other 2%). Also, recent research shows that a person's level of self-discipline is more predictive of success than their IQ level. In other words, don't take too much meaning from your score on an IQ scale.

Ibid.

I'd say that Obama has shown that he has a lot of self-discipline.

Years ago Liam Hudson did a lot of work on IQ, creativity, etc. (Checking this I was sad to find he died in 2005). He said that a certain minimal level of IQ was necessary for outstanding performance in many fields, less so in the arts and humanities - I think he said about 120, than the sciences. But that very high IQ was no guarantee of success as, above the minimal level, other personal factors became more important, such as self-discipline (see above).  

Maybe it's because I'm a Londoner - that I moved to Nice.