Thing is, these guys aren’t reviewing phone cases, they’re reviewing phones. FWIW my phone is caseless (iPhone 5), and I do agree that a lot of people use cases on their phones, but the point is that they shouldn’t have to do so to make the phone feel better, or even comfortably useable. This goes for the iPhone 5 too in terms of scuffing, not gonna deny. Also, you shouldn’t use popularity to measure quality. We’re talking about critical analysis, not economic; and sales are not a reasonable measure of how good a product is.
iPhones have consistently felt great in your hand (very premium feel). The GS3 felt cheap, and Samsung made no effort to make the GS4 feel any better. That’s what they’re upset about. If the GS3 did feel great, and the GS4 was a refinement of that great feel, then they would likely treat it like they do the iPhone 4/4S/5.