An honest comparison can't be made unless he gives up some details of what he's made throughout his life, and his geographic location for fair salary comparisons.
But... from a glance his outcome blows most college grads out of the water. Even compared to comp sci grads with good outcomes.
He was earning income at age 13 and full time income at age 16. The traditional school/college route will have you start work at maybe age 23. With debt.
For most geographic areas in the US, 150k is a serious salary, the apex. It would be hard to increase with paper/certs/degrees. Geography change may be the only reliable way to bump it, but then you'd have to subtract the increased housing costs (million dollar shacks) to compare.