Greats with the lowest Boxing IQ?

I can't say he was a great but he was a "kingmaker" and in some great fights, Iran Barkley isn't someone I'd consider having a high boxing IQ

 

Aaron Pryor.
Great skills, great athletic ability, overshadowed by a reckless seek and destroy style that got him put on his ass by a few of his opponents.
Pryor was can't miss TV in the early 80's.
When he had too, he could fight with discipline, and patience , and set up opponents smartly.
But most times, he fought like a rabid badger, balls to the walls and simply overwhelmed his opponents with sheer aggression and relentless combination punching.

 

Pipino Cuevas