Ive never read anywhere (reviews of black album, general shit around 99 problems etc) that Jay Z's 99 problems was a cover track. I never heard Jay mention that anywhere in anything. Not only is the hook identicle, the beat is too (in style).
Another example of Jigguh aka the swagga jacker stealing shit but NOT paying homage in style.
I like Jay Z and think hes an all time great rapper, but hes sly too.
"I came to the fork in the road and went straight" - some of you know what im talking about.