Short answers – it isn’t just the camera. It’s how the person using the camera takes the picture, plus what happens after the picture is snapped.
Here are a couple of articles written by fellow photographers about this misconception. They are good reads!
Great article showing the difference between a non-professional and a professional – using the same camera – so it’s not *just* the camera!: “Your camera takes really nice pictures” (by Erin Farrell)
This articles shows what happens after the picture is taken: Your camera takes great pictures (by Laurie Baker)