Its his gorgeous color that makes him stand out, when he only has average conformation. That's totally fine if he is going to be a riding horse, but if you want to breed the best foals, I think you can do better.
I'm not finding the faults the other are. He's been well stood up for the pic. Good strong hindquarters, standing neither under nor camped out. I like the slope of his shoulder. A rectangle , not an askewed rectangle can be drawn from his hocks to knees and withers to croup which is desirable.