Here is my list of features that are essential when shooting fast action sports activities like skiing or snoboarding:
1. Wide angle lens at the short end of the zoom. (i.e. wider that 30mm. Most video cams only go to 34mm at best.) This is much more important that having an extreme telephoto at the opposite end. Which I almost guarantee you will never use. But a telephoto zoom impresses a naive consumer so the manufacturers keep upping the telephoto end.
2. An effective optical image stabilization. (Avoid cameras with electronic stabilization. What this does is enlarge the image and then crops into the frame, giving you softer image. It also limits the cropping you may need to do later in the editing stage.
3. 60 fps (60p as opposed to 60i).
That said, I have yet to find a small video camera that has all three of these features. That is why I somehow find the space to carry the Sony CX360v. The colors are not the greatest but it has everything else I need. The GoPro doesn't have an image stabilizer, but the angle is wide enough that it doesn't matter in most cases, if I'm lucky.
And again, don't put too much emphasis on the zoom range. For one, it's amateurish to zoom back and forth while filming. I only zoom slightly at the wide end and never use the long end. Without a tripod, it's too unstable and the "aerial perspective" effect causes the image to be hazy.