well, bad rides with bad g's are obviously existant in the fantasy world and can never exists in reality, but judge the quality of the fantasy ride and see if it was good,. not by means of extreme g's, but of adrenaline views, that is how I draw the line in fantasy categorized tracks. Though of course I take g's into consideration, as g's are fairly easy to control in the game. Realistic rides are rated through realistic world guidelines imo.