Is the 5D Mark III Sharp??

[K-amps]

If you shoot raw then the camera is neither sharp nor soft.

A lens can be soft if its focus alignment does not match up with the camera (see discussions on micro-focus adjust).

A JPEG can be soft if the conversion algorithm is not up to scratch.

That's it.

There's no such thing as a sharp or soft DSLR.

I would disagree... my rebel XT (8mp ) is way sharper than the 1d mk.ii I had (8mp).. I attribute that to the aggressive AA filter on the 1d2. So yes you can have a sharp and soft DSLR just like the D800 is a softer version of the D800E.

[K-amps]

I happen to of taken very similar photos of my dog the other day with my mk3. i used my 70-200 2.8, not sure right now about the exact values, but the focus was spot on. I think it's pretty good when you can make out your house in the reflection of an eye. When i get to my computer i'll try and post one.

Correct, the hair around the eye looks soft, but the veins in the eye and the reflection is very sharp... tells me you shot wide open and the shallow DoF caused the hair to look soft.

[K-amps]

Here's another sample hand held in dim light

Lens: EF 24-105mm f/4L IS
ISO: 2000
Focal Length: 105mm
Aperture: f/4.5
Shutter: 1/40s

You got only one figure in focus... rest are so soft.