There’s a lot more to success than just intelligence so being intelligent doesn’t mean successful. But it doesn’t mean failure either. A low IQ can mean a person has a higher probability of being a criminal but because every criminal doesn’t have a low IQ, a low IQ is not a marker of a criminal. Intelligence is not correlated with personality. Criminality is not tested. It probably isn’t testable. 
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In an attempt to understand the relationship between IQ and delinquency, Spellacy (1977, 1978)
studied Wechsler IQ scores for incarcerated offenders. Non-violent subjects, comparable in terms of
age, race, and laterality, were compared with violent offenders. Violent offenders showed lower scores,
with differences ranging from 10.3 points to 13.8 points, compared with non-violent offenders. Similar
results were observed by Holland and his colleagues (Holland, Beckett, & Levi, 1981; Holland &
Holt, 1975). While for Spellacy (1977, 1978) such results reflect organic problems, Holland et al.
emphasize the difficulties encountered by low-IQ offenders. An association between intellectual level
and violence has also been observed longitudinally by Crocker and Hodgins (1997), using a cohort of
15,117 subjects.
Research has also shown that high IQ scores serve as a protection against criminogenic environmental influences (Kandel et al., 1988).
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So criminality cannot be predicted. Neither can success. A high intelligence is insufficient to guarantee a successful person. There are many very smart criminals. We only catch the dumb ones. There are many dumb successes. We only judge the success, not the personality or the intelligence. A likable person may be a criminal and a hateful person highly successful because there are many attributes to an individual. There are supposedly no identical fingerprints. Neither are there identical successful people. A smart criminal may inhibit themself from committing crimes. A dumb criminal may lack for example courage to break the law and thereby keep themself from committing crimes. An intelligent criminal may be smart enough to avoid detection or morally driven to resist being a criminal.
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