Who is the worst rapper: shaq o'neal, kobe bryant, or allen iverson?

as ball players i respect them but if have u ever listen to them rap........ brutal. shaq is mostly funny(kobe tell me how my *** taste!) , kobe might be the best player today but not gutta enough to rap, and ai....... great hooper but not a rapper(jewelz). so the topic is up 4 debate: which of these three make soulja boy look like a genius behind the mic?