Is Akon one of the best Rappers of the world?

i think Akon, Eminem, Snopp Dog are the best rippers.

Akon is a good rapper or should be said he iz great. But the best rapper in the world should be the one who is heard more and has the biggest fan following. And that must be a tie, i guess between EMINEM & AKON. But this still can't prove the point of the best. Because alot of surveys been done but no result came... whenever came...they all came different. So i say you should conclude that noone is best...all are good