Canon 61 pt AF > Nikon 51 pt AF. done.
Nonsense. Point count != superior AF. In my experience the 7D's AF is superior to the D7000's, practically on par with the earlier 45 point 1D bodies and several Nikon 51 point bodies, and it only has 19 points.
I don't honestly know who has the best AF right now because I don't spend sufficient time with the top tier bodies. But AF is an extremely complicated thing to objectively test, and subjective opinions are open to bias and error. AF performance can also be better on body A for situation 1, but better on body B for situation 2, etc, etc. Not to mention that lenses are at least as important as anything in the body, and it's a mistake to assume similar lenses from two manufacturers have similar AF.
Even with a case as one sided on paper as the 6D and D600 you can't conclusively say one body is always better than another. There's little point in discussing the top tier bodies unless you happen to own and shoot both regularly under a range of challenging conditions.
You must have never used the sheer awesomeness of the canon 61-Point AF system And yes, I've used nikons excellent 51-point system as well. So yes, I can say the Canon AF system is better than nikons right now. Plus, I never said that point count makes a better AF system, because then S0&y would be the best then.
My Xsi was good
My 7D is Better
but my 5D3 is Great.
While I think that in the aggregate the anecdotal evaluations of Canon's 61pt AF system would generally concur, that it is currently the best available as it produces a higher rate of keepers, and really good keepers at that...I have to agree with dtaylor that it is all still anecdotal. It can be tough to objectively test an AF system, so we can't really claim that any test results to date are anything other than subjective. Thats not terrible though...statistical analysis of subjective tests can still produce useful results when aggregated, and I think those results speak resoundingly in favor of the 1D X's AF system.