Compared to my 5Diii, my in focus shots of action (SEC college football specifically) are far less than my 5Diii with same lens setup. That is the day issue. At night I won't even start a comparison because the 7D is at a distinct disadvantage.
I do like the 7D for many reasons, FPS is one biggie, and the latest rumors of the 7Dii sound awesome (hoping for full sensor), but I find the AF on the 7D lacking for my purposes.
The AF of the 7D is pretty good ... but once you are spoil yourself with the AF of the 5D3 / 1DX, all of a sudden the AF of the 7D doesn't seem good enough
1DX, 5D3, 600D, RX100
16-35L, 24-70L II, 70-200L II, 100-400L, 50L, 85L II, 135L, 24TSE, 40, 100 macro, 18-55 II, 55-250 II, 600RT x 4
The grass is always greener when you crank up the saturation in photoshop