FOr the camera part I think the images look very nice. But there appears to be quite a bit of distortion with the photos. Is that common for the lens in question?
If you are talking about the DPreview pics, the 12-60 is known for some distortion at the wide end, but it is a 5x zoom that maxes out at 12mm.
The other site, It seems, is using a 14-42 kit lens. As with most kit lenses, there is little correction for distortion.
I'm quite impressed with the DPR pics, less so with the lets-go-digital photos. High ISO with dark areas in the frame has never been Oly's strength.