The HC-X1 is most definitely the better camera over the dvx200, mostly due to price, the hcx1 is like 1500 cheaper. I havent seen anyone in action sports use a hc-x1 yet, but most test footage I've seen looks good.
TBH im debating a gh5 or hc-x1, im not sure if I have the need for either but they're both great cameras.