This is a rather simple comparison of two cameras & lenses which are about 18 years apart in age and technology.
I attempted to shoot the same subjects with the same perspective, It is difficult, as the aspect ratios are different, as is the area of what is seen through the view finder. Of the course the cameras shot each other.

Each shot was post processed only in Lightroom and kept simple - WB, tones, capture sharpening and a bit of NR. Each photo was resized to 5000 pixels wide. I cropped a bit to make the vertical heights the same. No post work was done on the resized photos. Of course you will see differences when you look at higher magnifications.

One conclusion - for simple posting on the Web like this the old G2 holds up pretty well.