A few of my friends used to prefer the picture out of a TV modulator rather than SCART or monitors.
They'd say "but the picture and graphics look smoother on my TV. On yours the graphics look crap". This comment I could take when I bought a £10 SCART cable, but after dishing out £250 on a multisync I got a little pissed off.
I don't know. "Untrained eyes" I used to tell myself.