All 3 games are far above mediocre, in my opinion. In fact, I think they're all great games.
Road Show tops this list for me. Love its layout, storyline software and happy theme.
Judge Dredd (with Deadworld lock) is a good second to me. In theme, it's about the direct opposite of RS. Very dark, very hardcore. Lovely shot layout as well.
Denolition Man loses this battle in my book. This one has a great layout, immersive gameplay and an awesome sound package. But the dated theme and ugly translite artwork make it a third on this list for me.