Who do you think is a better drummer? Lars Ulrich (Metallica) or Joey Jordinson (Slipknot)?

There's a video on Youtube called Lars Vs Joey drum battle.. and everyone says Joey from Slipknot is a better drummer than Lars..? o_o
I am not fond of Slipknot and i've never really heard many drum solos from Slipknot..
But who you think is better?
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