My understanding regarding Titus The Fox is it's one of those games you need to have the right CPC to be able to enjoy it fully, though having said that I initally brought the game from the UK, it was good, though it was lacking music and was a bit jerky, then by sheer luck AA had it on their Covertape. I had more fun with that version than with the one I brought, so there could well be an inferior version of the game floating around (or it maybe something to do with having the right CPC). If it's a game which needs the right CPC, then playing it on an Emulator will most certainally reveal limitations from the Emulator.
Though having said all that I found it to be a reasonibly completable game and anyone can tell that the artists spent more time working on the Graphics than the rest of the game, cause it really is a extremely straightfoward game.
The game from Titus which really bugs me is The Blues Brothers, AA had that one on their covertape and was enjoying it so much until I got to the same stage someone else had only to discover a bug in the game!

AA gave that one a Mastergame too and indeed it looks and plays really good until you come to that glitch!