Go look at some of the GoPro comparisons on the web, there does seem to be better results with the GoPro 2, borne out by the higher pixel count.
However, there are a few advantages over and above mere video quality. Once you are used to it the menu structure and icons on the GoPro 2 are easy to navigate, whereas (I am told!) the GoPro is far less intuitive. Apparently the 2 also has a better lens - cannot comment on that. I guess to some extent it depends on what you are going to view your results on, a small laptoop screen probably does not need too high a resolution.
I use Windows Live Movie Maker on a i3 equipped laptop, and I was able to get a video onto YouTube in one evening, despite never having used Movie Maker or YouTube before