Don't worry about how you compare to others. There's some random luck involved when learning. That is, whether you happened to try something that works or not. Plus a strength difference is difficult to overcome as it means your technique has to be pretty much correct. On that note, your leg coordination/strength is not so good. Don't worry, most people favor upper or lower body, similar to left and right. When I started I was lower body and I looked like a tap dancer. My first coach advised a lot of full body exercises, whether it's complete throws, Olympic lifts, or whatever. You're trying to grip the guy down.