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Nikon beating canon lately It's the quite the opposite. You must not be aware of all the issues nikon is having.
Their d600 has oil issues and they still haven't acknowledged those or found a fix for it...you just deal with it.
Their d800 also had multiple issues with certain AF points. I mean it's sad when in the Nikon forum there is a thread saying "no whine d800 photos" or something along those lines.
Their D4 is inferior in the 1dx in every way possible, see recent threads there (one of them started by me).
Their 24-70 2.8 and 70-200 2.8 lenses are not as good as canon's current versions. Their primes are slower focusing, and they have no 1.2 AF primes yet.
Nikon has issues with green tint on their LCDs, and in general their files are lacking the amazing skin tones that the new canons (mainly mark iii and 1dx) give.
So I totally disagree with you. It used to be that after the D3 and d700 came out Nikon went a step ahead of canon. But the tables have turned now, and canon is ahead in my personal opinion.
All that being said you should never switch systems because of A generation of cameras or lenses (unless you don't mind losing money and you feel that the slight benefits of something in particular helps you). Talking specifically about the d800e, it is slow, sluggish, and has nothing going for it but resolution. If you are strictly a landscape or studio photographer, and you can't wait for canon to release their big MP body...then perhaps d800e is the way to go. However in every other way, the canon full frame equivalent mark iii is a much better and balanced camera.