So what's going on Canon 5D 2 &3 and Nikon D800

Thank you, thats great that you posted this!!

As many on the Canon forum continue to post the first noise video as proof positive of Canon's superiority while completely missing the fact that the ISO ratings are between 1/2 to 2/3 in Nikon's advantage when comparing the low light performance since as is stated in the test, Nikon's 3200 ISO should probably be compared to Canon's 4000 ISO because of exposure!!!