Getting a solid description of the differences between these two pedals is proving to be a challenge. Are they distortion pedals and if so how are the two different? Are they fuzz pedals? Is one more of an extreme version of the other, or are they not even trying for the same effect? Pete's website has a description, but I've found about half the people who have them describe a G2 as he's described the P2, and vice versa. And I know that it's not best to buy a pedal based on how it's classified, but these are not easy to demo, so a description (and a few MP3s) is about all you can go on.