Are you kidding? Sure manga looks nice, the art is good, color would be cool but not always needed. But you can't say comics look nothing special. Comic books have a lot of glorious colors and that's good for marketing, also they are printed on glossy paper and you can get a limited edition which really amps it up using thicker paper and extra artwork. I'm not sure manga does this, but they don't do it enough. I'd have to say comics look more easy on the eyes. If you let a child choose between a colored novel between one in black and white, chances are he'll choose color.