Depends on what one means by success. Upward mobility surely requires keen social skills, but exceeding at any job requires the ability to do the work efficiently and effectively, in which I believe IQ is the most important. To be among the richest, and not accounting for other factors, I would say it is about 25% of the "correct" social skills, and 75% IQ, perception, and knowledge relating to an advanced field. For a standard competitive job that isn't in a lone or specialized work environment, I'd say it is more 75% social and 25% IQ.
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BAP: 103 aloof / 100 rigid / 103 pragmatic
AQ: 40 EQ: 8 SQ: 114
Aspie: AS-156/200 NT-56/200
RAADS-R: 189 total
Diagnosed 9/2013