There are some strange disparities between the PC and Playstation versions of LEGO Racers. In addition to what you noticed, there also seems to be a bit more patching up around scrapped shortcuts in the Playstation version than the PC version (there is no longer a gap in the waterfall on Dark Forest Dash). For the most part, it seems like things they probably wanted to do with the PC version, but simply didn't have time. I also noticed that Veronica Voltage's path on Pirate Skull Pass is different between the two versions, which perhaps indicates that the developers were taking the unique challenges the console version of the game presented players into account.
It may be that Veronica's paths on the other courses are different as well, but I haven't payed close enough attention to be certain. In Pirate Skull Pass, it is exceedingly obvious: In the Playstation version, she takes a sharp turn in between the support for the pirate bridge and the rock behind it to get a white brick, whereas she never does this on the PC.