Nikon fanboys dislike this news 
why?? I'd rather 36MP a tons of DR than 46MP and old school DR. I'd rather options for 5 and 6fps than stuck at 3.7fps no matter what. I'd rather a 5D3 or D800 than these potential specs.
You've made reference to poor DR in two posts now, regarding a possible 3DX sensor's performance. First, a huge caveat - we're all arguing about a presently fictitious/rumored camera body - so claiming the status quo will remain, or that Canon will make some giant leap is in the realm of pure speculation. That said, I'm going to speculate... 
The key thing I draw from the "leaked specs" is the point about it having improved heat dissipation for "industry leading low ISO performance." This is supported by the leaked specs capping ISO at 6400, with ISO 50 being native, expandable to ISO 25. As a result, I would anticipate significantly improved noise and DR over existing sensors. Otherwise, Canon would be dead in the water with a 46 MP camera that is essentially a 5D3 with double the resolution. Not much to gain there, and no one would dump the money on it. But hammer home some sick new low ISO performance, and it could be a hot item. I think this will be an offering on an entirely new level ... something we haven't seen yet from Canon.
As I've stated before, I just hope it's real.
OOPS my bad, I was so used to Canon being behind at low ISO and doing very well at high ISO that I read the 'specs' too quickly and thought it said industry leading HIGH ISO but you are entirely correct about everything. I agree with all you say above.
Well, first off these specs are probably just from some random person making stuff up, but whatever, yeah between ISO50 standard and "industry leading low ISO" and all you are correct, if we take the rumor at heart at does hint at superb low ISO so ignore all my posts above, oops.
If it had industry leading low ISO DR and 46MP that WOULD be a total landscape and studio beast!

In that case the 3.7fps for FF mode wouldn't be so bad at this point in time.
Once again ignore my series of dumb posts earlier in the thread.

(Although it would still be awesome if Canon gave it a crop mode at more fps, ala D800, because then it could be a total wildlife shooting camera beast as well as just a landscape/studio beast.)