Well Eminem Admitted To Doing So...So There Goes Your Argument.
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I Think Em Would Fuck Nas Up. Even Though Nas Would Have A Lot More Shit To Use On Em...I Think Em Would Come With The Humourous Punches N Sick Flow n Dope Multiz n Shit. Where As Nas Would Just Diss Regularly. In Battle Skills Em Is Way Higher Than Nas. But If It Was Like...A Topic Battle...Or Whatever. Depending On The Topic Maybe Nas Might Have A Chance. But Thats Just My Opinion...And...Who Da Fuck Said GZA Was Good?:S