I know we love canon but from a consumer standpoint a 2699 dollar product with a defect like that should not get 4 out of 5 stars...no matter how good the ISO is if you have blown highlights with black dots all over ...
If consumer reports had their "people" rate the camera they would say blah blah blah and how great it is and then state the problem and that it is a 5 star camera but is getting 2-3 stars until canon fixes the problem (if)
EDIT: Wally Dude, I'm with ya... here's a little rant for your entertainment 
People would see: 2-3 stars and assume the camera is crap. It's not apart from this occasional (hard to see) problem. Yeah, it shouldn't happen. But that means the 1Dmkii N should get 2 stars too, because it has the problem.
FM has the 1Dmkii N as 9.5 out of 10 (4.25 stars)
FM has the 5Dmkii as 9.9 out of 10 (4.45 stars)
I guess the black dots issue isn't considered such a great big problem. 
I do agree with you. It should not have the problem at all. However, I can't see that the problem is large enough that it shouldn't get applauded for the areas it does achieve in.
JMHO YMMV
Oh and... I don't really care if it gets 0 out of 5, just means more will be available to buy. LOL

All true 



