It was not Pac but Floyd who started the steroid controversy when he demanded OSDT out of the blue. I think Pac refused it out of false pride that is of giving in to the extra "dictum" of Floyd rather than anything.
Pac never said he was afraid of needles and he has not talk anything about Marquez roiding. Please don't invent stories like an idiot which I dont think you are!
it was the first ever OSDT requested by any fighter, why would PAC accept it? as what George Foreman said "Who are you to dictate the rules?" Testing started to become a serious issue when boxers like Berto, Peterson and others were caught. That's when people realized that OSDT should be included in big fights or championship fights.