I think the joystick is a matter of preference and experience. I, and lots of others, use the 60D/70D system and do quite well with it. That said, I don't see many posts where someone who gets used to the joystick system complains about it and wants to go back.
The matter of one chip on the 70D versus multiples on the 7D is largely irrelevant. It is quite possible to build more power, more functionality and processing speed into one new chip than was available in previous multiple chips. In that respect, the 70D represents an improvement over the 7D. I have no idea how it compares to the 1DIII system. I would suppose the 1DIII system is superior.
I agree that at this level, it takes a lot more than a decent camera to get good action shots. I do not have the sports knowledge, or the photographic abilities, to make full use of a 1D-series camera.
Well, the stick is important enough to sports shooters that the 1Dx gets two now, and the 5D3 gets a second one on its grip.
Have you seen any process profiling for the 70D vs the 7D during a soccer game? Any specs on the dual DIGIC 4 vs. the DIGIC 5+ with performance? Me neither. Two processors can usually get more done than a single processor that's twice as fast. The AF hardware just plain is not identical between the two.
My point is that just because the hardware and software differences are not important to you doesn't mean they aren't important to sports shooting. Nothing wrong with having reduced needs and being endlessly satisfied with an XXD body.
My original comment was in reference to Mike Deeps statement about 'the 1DIII/70D comparison':
"Doesn't matter. If you're shooting sports and would like your pictures to be in focus, 1D." Mike Deep.
That is over the top.
Yeah, agree, again.