@Ankorwat. - Please don't waste everybody's time by writing what everybody here already knows: Nikon (Sony) sensors have more dynamic range right now.
I don't think that old bit information is going to cause any Canon users reading this forum to jump ship. Lets all go take some pictures and let this topic die!
Bodies: 6D, EOS-M (22/2 and 18-55)
Lenses: Rokinon 14mm 2.8, 35mm 2.0 IS, 85mm 1.8, 100mm 2.8L IS Macro, 135mm 2.0L, 24-70mm 2.8L II, 70-200mm 2.8L IS II, Extenders: EF 1.4xIII, EF 2xIII ; Flash: ST-E3-RT, 600EX-RT (x3)