May be I should link that Reuter's Best 100 photographs in 2011 again
From my limited read around here in the past 2 weeks, you have come across as a MASSIVE Nikon fan boy, and couldn't be any bigger even if you are a shareholder.
So whilst I would read the links but I wouldn't actually believe the wild assumptions you make on Canon and Nikon lenses, not with the limited experience you have with them (in the context of how many are out there). I make no statement as to the quality of Nikon's optics, I am sure they are superb, the way you come across with Canon gear you'd think they make them out of frosted glass and smeared with butter.
Yet, if it was so bad...there wouldn't be that many working press photographers uses Canon gear.
Both make excellent gear, it's horses for courses. Although Canon do have more courses (or lenses).