Lol who the heck can give you odds? Just go get the xrays. Test his range of motion and see if it's good and if he shows any discomfort. When I got my pup my vet did a health check to make sure he was healthy or else return to breeder and she tested his range of motion on his hips.
My former dog couldn't keep up with other dogs and couldnt jump as high and struggled to get up after a nap. It was clear he had weak hind legs and ended up with hd