Canon Mark3 OVER D800

As of now the Canon 5d Mark3 with 22 million pixels having 7 frames a second

AT FULL FRME// i expect a lot better low noise from 5dmark3 than what the d800 provides at ISO 3200 and 6400
also canon 5d mark3 will have improved auto focusing than 5dmark2 as well

i wished Nikon d800 was 22 million pixels with same 8 frames a second with grip with same low noise as d700 ..

i have both Nikon and canon
i am not sold in Nikon d800 low noise at iso 3200 and 6400
that was my biggest concern
and i am not one to carry two camera around with me

i feel the canon 5dmark3 will do most what i wantbut my heart with nikon
for handing a camera...

Just wondering how many TEND to buy canon 5dmark3 than d800