The left and right sides of this ride are definitely NOT the same. The do remain identical in track configuration until near the end of the ride, at which point they take different turns in order to get the train to the unloading station. I actually counted the direction and # of turns near the end of the ride for both sides (I know, I'm such a geek) because my DW had told me the two sides were different and I didn't believe her.
IMO, the left side is better, since it seems a little wilder--as many people have stated above.