The singer from Nickelback has a gret voice, and they have proved capable of writing formulaic power ballads that appeal to lots of people. That is what they are good at.
Pitbull is good at making money, through businesses such as Bad Boy Latino and his shameless product endorsements. I don't think he has much rapping or producing skill at all. He's in songs just for being Pitbull. He's the Kim Kardashian of music.
Right. The point is that those business skills still could as "talent". Having not listened to his stuff, I can't comment on his music talent, but you don't get to be that successful without having some degree of "talent"