he was 220 right before he dehydrated himself.
he is like 230 before camp where he slowly decreases his weight.
and yes, jon jones succsess comes mainly from his size and reach advanatage.
he would not have the same succsess as heavyweight, AT ALL..
Look at stefan struve, he went straight to heavyweight eventhough he was a skinny ass kid, weighing no more than like 235 and being much taller than jones.
Jones would be like stefan, maybe litlebit more succsesfull at hw if he started of there.