I am incredibly happy with Canon glass. Do you have anything to back up Nikon glass over Canon? I'm not trying to be difficult, I just don't think that either Canon or Nikon glass is better then the others, by a significant margin. If you look at the photo industry, there are MORE pro level Sports shooters that use Canon then there are Nikon. If you look at the Wedding industry, then it is much closer, maybe 60/40 Canon in my experience, but for "general use" I think Canon and Nikon are very equal.
I have owned both Canon, and Nikon, and Hasselblad for that matter, and like I said, I can't find a significant difference.
Well... Let me qualify that. Comparing PRO level lenses from each company, not comparing a Canon L to a Nikon consumer grade or vice versa....
If you compare a $1600 Nikon 24-70 2.8 lens to a $70 Canon, of course the Nikon is better, but the same would be true if you reversed the comparison.