I understand you were asking for comparison between PhotoShop and Gimp, I would recommend you try PhotoPad. While PhotoShop is a great tool, it is an expensive tool intended for professionals. PhotoPad is a great option for quickly and easily editing photos. More info here: http://www.nchsoftware.com/photoeditor/index.html
Hello, PhotoPad is a very simple and easy to use software for editing photos. You can crop, rotate, add captions, adjust colors, and more. Check it out here: http://www.nchsoftware.com/photoeditor/index.html