Let's give Canon the benefit of having most likely addressed these obvious issues and see what they come out with.
5D3 LCD backlight issue. 5D1 mirror issue. 1D3 AF issue. 50D banding issue. 7D Sandisk issue.
Lets not assume anything! Let the usual mugs buy the first ones at 25% more and beta test them for the rest of us.
the current 18MP sensor is terrible. Not event my best resolving lens produces sharp photos on my 7d, whether it is the AA filter or the sensor itself,
Either your best resolving lenses aren't as sharp as you think, or you haven't set the camera up properly, or you can't use DPP or photoshop. 99% of 7D IQ moans are from people who would have been better sticking to rebels. The 7D is a camera that needs set up. Full stop. Set it up. Learn it. Tweak it. Much like the 1D users have been doing for years, and you'll get further. Expect it to behave like a rebel or x0D and you really have wasted your cash.
Nikon users have enjoyed, and enjoy to this day, better JPEGS out the body, price for price point.
Canon users have benefitted more from proper RAW processing, particularly sharpening and luma channel NR.
The 7D gets a poor rep on some forums. I think users who buy a camera designed to give you choices and to be set up and who fail excercise those choices or to spend time setting it up are the real problem.
If you own a 7D and aren't getting the results you want:
A) Chuck anything with a slower constant max aperture than f2.8
B) Chuck anything without a focus limiter switch
C) Chuck anything without a USM ring motor
D) Check out the CPS videos on AF set up.
E) Go out and practise on traffic through fences. Birds through trees.
F) Tweak it.
G) See E
H) See F
I) See G
L) See H
M) Use it in anger.
N) Try using a zone rather than just using auto select AF
O) Once you've got the hang of zones, try linked points
P) Once you've got the hang of linked points try individual points.
And this is before you get to the post processing side, and post processing is something Canon users have always had to live with. Not just on the 7D.