Ken Rockwell is without doubt a good reviewer, but has an unashamed bias toward Nikon.
A full-frame sensor is unquestionably the way to go for landscapes, portraits, "scenes" and the like. The 5DII is a lovely beast and with 'L' glass, pops-out beautiful sharp images with agreeably neutral but vibrant tones (it says here in my notes
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I use an old Hi-8 for time-lapse so I can't comment there.
I shoot Canon, but have always preferred Nikon ergonomics if that's any consideration.
I usually agree with 'Octane', but I can't say I've noticed a huge difference in the way Nikon render's skin-tone. Maybe a little more "tanned"?
Where Nikon does seem to have the edge is in low-light performance. I have noticed much less noise in Nikon images at ISO 200+ in dark scenes.
I doubt you'd be disappointed with either camera though.