What makes the difference in terms of picture quality are things like:
Most important : Photographer composition skill - photographer technical skill (in manipulating ISO / metering / focus controls etc) - photographer's ability to post-process the shot
Important: Lens quality - filter availability & quality
Less important: Camera make and model (for most general shooting eg not specialised shooting where for example a Canon 1D4 AF & frame rate will eat an entry level camera alive at something like photographing boxing)