What would you think ? (weight perception & gymnastics)?

What would you think if you saw a 200lb 5'5" girl walk into a gymnastics class, then what would you think after you had seen her in the intermediate class performing a perfect backhand spring, front-hand spring, front walkover, back walkover, and other skills that belong to the advanced class, but not the kip? The girl had performed the best in class. I know that according to the BMI she is considered obese. How many overweight gymnasts do you normally see and how successful are they? (I am 5'8" and 189.25lbs and the only thing keeping me from going to the advanced class is the kip and the need for arm strengthening.)