Canon 6D iso about equal to the 5D Mk II

Talked to a Canon tech today on the phone and he said that the ISO performance on the 6D will be about the same as the 5D Mk II. I also said that if the ISO performace on the 6D was comparable to the 5D Mk III then it would compete directly with the 5D Mk III and hurt sales. I guess we will see when the pics come out on the high ISO's.
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Jim