>>>>Weight-Carrying Ability<<< I would think it is alot to do with the condition the horse is in. Some of the smallest, littliest people are very very strong. Depends how much conditioning etc. A smaller framed horse might do great if it has been conditioned properly. Making his back, legs, everything stronger and able to carry more weight.
How much time, as my son would say has he been in the WEIGHT ROOM!!!
