If we presume 200 is as likely as 0 and that both are absolute bounds and there are no skwewness or kurtosis problems an that intelligence is an linear interval scale they could both be the same.
Yes, it is likely true that they are one and the same. But there may be some super-genius out there skewing the average. Maybe someone who has accessed that 90% of unused brain power.
Throw in a couple of self-selection effects, whereby people are more likely to measure aspects of their own mental performance that they value, and are more likely to value aspects of performance that they are good at, and it can be entirely true that most Americans are above average and median intelligence. Because most americans will favour intelligence measures they do well at.