Here is a set of 3 clips taken with a Sony VG10, Canon t2i (550D) and sony F3.
I used the same Nikon 50mm f1.8 lens on all 3 cameras (MTF F3 adapter, cheap E-Mount adapter and cheap Nikon to Canon adapter). I had the lens at f8-f11 for all three cameras and used the shutter to control exposure or in the case of the F3 the ND filters. All were set to preset white, 5600k, the sky was visually white with flat hazy cloud. The VG10 was at factory default, the t2i was default except for Highlight Tone Priority which was ON and the F3 default with the exception of Cinegamma 1 being chosen.
All 3 cameras do a pretty decent job overall. However both the VG10 and t2i have issue with aliasing on the brickwork and roofs of the far building, see the frame grabs on or original footage on xdcam-user.com/2011/05/comparison-clips-to-download/ for a true idea of the aliasing. I know the idea with these cameras is to use a shallow DoF so often the background will be soft, but not everything will be like that all the time. There are also more compression artefacts from both the t2i and in particular VG10 (the barbed wire at the beginning of the pan looks pretty nasty). At least with the VG10 you can take the HDMI output and record that externally. Clearly the best pictures are from the F3, but then it is considerably more expensive than the others. It is interesting to note the distinctly yellow colorimetry of the F3. I do have matrix settings to reduce this, but I did not use them during this assessment.
Also note how much wider the FoV is with both the Canon t2i and even more so the F3. Clearly these cameras have larger sensors than the VG10, the largest being the F3's Super35 sized sensor. This was another surprise, I had assumed the Canon and F3 sensors to be much closer in size than this. Remember that all three used the same lens and the shots were done from exactly the same place.
More info and the original camera files: xdcam-user.com/2011/05/comparison-clips-to-download/