Sorry to have to point it out, but haven't you been bitten by a dose of fanboy-ism too? Is Nikon paying you to say all this? Did you think Canon, Fujifilm, Olympus and Pentax don't have their professional base too? Don't think so.
I found out neither Nikon or Canon pays for me to say good things about one or bad things about another; a camera is really just a tool, and I'm glad you found one that suits you, but there is no need to label someone a fanboy when they are really giving a reality check (in their right mind too).
There is really no direct comparison between both camera systems; starting from the bottom, the 1000D certainly is a little better than the D60, but after that comes the 450D, which in turn is superceded by the D90. The 50D follows that, and is a level below the D300; following that comes the D700 and the 5DMkII. Following up is the pro-body range of the 1DIII on Canon's side and the Nikon D3, a step above that.
There are no level grounds, and we're just looking at two systems. I don't even wanna confuse myself with the other brands. At the end of the day, what you are comfortable with is what you are comfortable with, but there is no need to slam another brand, or become a unpaid endorser for the brand you use.
Cheers.