No sh*t, they have to be to make any sense out of how high the guy ollies in relation to his surroundings. If the guy in the game can ollie over cars with ease, then you need to ask EA what the f*ck that's all about. I'm not gonna make my parks suck ass for the benefit of Hardcore Mode - something I tried on several occasions & decided it was gay. No offence, just the way I play. (thought I better add that before I'm virtually attacked by 5 random people who are stalking this convo)
**i haven't got the chance to play any of the parks on this site yet, a Hardcore conversion is always possible**