Really? I have found that like most sports it all comes down to mass and height.
Winning is an entirely different case (because resisting getting thrown too much results in points loss), but if you just want to avoid falling, just be in your upper end of your weight class, don't be short, and pay attention to footwork. You won't win any competitions this way but you won't get thrown easily during tachi-waza either.
Winning is an entirely different case (because resisting getting thrown too much results in points loss), but if you just want to avoid falling, just be in your upper end of your weight class, don't be short, and pay attention to footwork. You won't win any competitions this way but you won't get thrown easily during tachi-waza either.