Yeah I don't think I've seen any comments saying they'll be 'slow' (they shouldn't be at the price), I've seen plenty saying the prices are a joke and questioning the 'marketing' that's been released because it's basically empty of any real 'evidence' so not sure how we'll be 'eating our words' unless they magically chop a third of the price off....
Also have to laugh at that comment from Hardware Canucks... they have been 'briefed' about the full performance so basically they're just taking what Nvidia says (ie the 'marketing') and accepting it without any in house testing.