If you say so, but just try it. Try resizing both what'shisname's version and highcog's version to 16x16. Which one looks better? Then there's zilmar's resize of it, which lost some of its 3d aspect making it a worthy icon. I honestly don't think it's worth it either way. Whatever floats your imaginations, I guess....
And yeah, the PNG image loses its transparent background if you save it with certain programs and/or use the wrong settings. It may have been intentional, as he might have just been giving a preview image?