I have both the 1DX and 5D3. The files from the 1DX are NOT way sharper than the 5D3 and the high ISO noise from both cameras at 25600 are unusable. So easy to spend someone else's money. The only reason I bought the 1DX is because yes, it is superior to the 1D4. But I get paid to shoot sports. If I didn't get paid to shoot sports, the 5D3/1D4 combo would be MORE than enough for me.
Why would I say something I don't see? It makes no sense. I'm just saying what the differences are, because a lot of people say, meh, it's no difference. Well, that is wrong. And why would it cost twice the money if 4 less mp and a bigger body was all that was between them??
To your defense, I haven't used any other raw-converter than Lightroom 4, and process the 5d3 files in Lr and it is STILL as we talked about when the 5d3 was new, the images aren't as sharp as the 5d2.
If it is the files from the 1d X or if it is MUCH better support in Lr, I don't know, but I have shot 20.000 images with the 5d3 with Reikan calibrated lenses and I haven't gotten one image sharp as I did from the 5d2 or the 1d4. The 1d X is way different, I can apply much less sharpening to get them truly sharp, and overdoing it a tad makes them pop like crazy.
I don't care if people say they are very simmilar. Trying to shoot my kids with the 5d3 was incredibley much easier than with the 1d4, but with the 1d X EVERY shot is perfectly exposed and focused, and I always have the right moment in a burst.
And the perfectly exposed images results in much less rescuing in post which also leads to less noise.
I do agree that you have to be very careful with the 25600 iso, but compare 6400 iso and the 1d is HIGHLY useable and they clean up very nicley, whilst the 5d3 is gritty and ugly. The new lightmetering in the 1d X had a lot more to say than I first thought, as I said, no need to rescue an image, it just sticks.
If that matters to YOU, I have no idea and I don't care, but if it is someone out there who wonders if the 5d3 is the best there is and like me, want to buy the best even if they don't earn that in within 4 months (or at all), the answer is very clear....
If you don't have the money to spend on a 1d X, fine, not all people have it or even remotley close too wanting to spend it. But if you do, don't settle for the 5d3 when you can have an EPIC smilemachine in the 1d X.