I hate this argument, because it makes no sense. The two are not correlated. You can have a game that looks excellent and has excellent gameplay, or a game that looks and plays like stuff.
People like to bring this up when someone includes graphics as a point of critique, and that's stupid. Graphics are indicative of the amount of effort the team put into making their game shine. There is no reason a game can't play good and look great, it's like saying you can either have a Prius or a '69 Camaro (Prius getting great MPG but looking like a snake and a Camaro looking godly but getting horrific MPG). They are
both elements of game design, they are
both important. It doesn't matter how innovative and cool your game is if the graphics make it look like a mess. Take HL2 or Portal for example. Excellent visuals, great graphics, great story, great gameplay. If you think aesthetics are unimportant, you're wrong. No, you don't have an opinion in this case, you're
wrong. Aesthetics are extremely important when it comes to human nature, the visual qualities of something help people formulate schema an object can fit into.
They are both very important elements of game design and they both contribute to creating public interest and maintaining positive opinions of the game. Gameplay takes precedence over graphics, but graphics are still very important, as Bisjac said. It's a stupid black/white argument for a concept that is fundamentally grey and you're stupid for thinking that you can't have both in a game. Really, it's just a way to become an enabler for stuffty game devs to skip out on visuals.
Gameplay. If I wanted to watch something fancy, there's something called movies.
Chrono, I honestly didn't expect such a stupid comment from you.