What can one really tell from ASET and IS images?

[DelsFan]

If images are provided from different vendors, or perhaps from the same vendor but taken on different days, can one really make a critical decision between diamonds based on ASET and IdealScope images? Or does one just do the best they can and be satisfied with an AGS0 H&A (in some cases) diamond. Or fly out to see the diamonds in person...

For example, here are three diamonds; is one clearly better, or one clearly worst, based on the actual photos of the diamond and the ASET and IS images provided?

ONE: 1.012 F VS1
http://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-2684406.htm

TWO 1.010 E VS2
http://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-2982215.htm

THREE 1.023 E VS2
http://www.briangavindiamonds.com/d...ls/1.023-e-vs2-round-diamond-ags-104061539025