Which camera is best for event shoot?

Canon or Nikon

Which is best for brushing teeth - Crest or Colgate?
Which is best for quenching thirst - Pepsi or Coke?
Which is best for driving to work - Toyota or Honda?

See a pattern? Your question is too general, and Canon and Nikon are just brand names. Brand names that happen to be neck-and-neck in the photographic industry right now. They both offer what you need. Choose one. Both are best.

A camera is just a tool, it depends on whether you know how to use it. And your choice of lens is what really matters. The camera has almost no effect on image quality.

You will get answers with 50% Canon and 50% Nikon.

Both top named cameras, both excellent quality and performance.

Both are best.

Depends on the photographers preferences. I do prefer Nikon though.

Canon make a lot of camera models.
So do Nikon.
So do Pentax, Sony, and a host of others.

Your question is pointless and unanswerable.

Camera bodies (and brands) are unimportant when it comes to taking photographs. What is more important is the skill of the photographer and the lenses used.

A good camera is merely a tool, like a paint brush - only in the right hands is it capable of wonderful works of art.

To get away from the negative comments so far, events photographers, like sports photographers, need a fast frame rate, it's the only situations where the 'machine gun' approach is often useful.

Nowadays I tend to use my Pentax K5-lls for events and weddings, high contrast and no sharpening required as there's no AA filter, has a frame rate of 7 frames a second in Raw, is smaller and lighter than the Canikons (which I also own), used with L series primes they offer visibly better image quality than full frame Canikons strait out of the camera, now I have a Raw workflow just as fast as Jpeg, but much better image quality. They are weather sealed, great build quality and are a much cheaper system to buy into.