the top is a berm... and judging by the dirt flying in the bottom pic that is a crash....

 No, and, no Top is a wallride Bottom is staged and someone threw dirt at it

 whats the difference between a wallride and a berm?

 If it was a berm it wouldn't be possible to ride it as flat like that, with that body position.but because it's a turn on a wall it's practically a wallride which makes it very easy to ride it as flat like that. Which doesn't really take that much skill. Much like Ken Block, if you do enough takes and spend a lot of time thinking about how something looks cool in a frame, you will look as if you're actually really good. It's all about perspective, check the video of that top shot and you will see what I mean.