Nah I know what you meant I was just giving you a hard time about it. Ive seen some some scrawny looking little dudes put up some crazy weights for their size though, especially on more cns/leverage driven lifts like deadlifts. The thing about the single leg jump is it has to be practiced and most heavier muscled builds got that way by lifting, some of which was likely squatting or other similar movement, and will jump better and more often off two legs. I dont subscribe to the theory that the single leg jump is totally dependent on lighter bw, tendons, etc. as Ive seen otherwise too many times first hand. Naturally gifted jumpers will jump well both ways alot of the time, but an athlete that has had to train his vertical usually improves more in the double leg simply because the movements he chooses and the musculature they prioritize is specific to the bi lateral jump. The same can be done with the single leg jump, just a much different set of exercises and different emphasis on what muscle groups are the priority has to be taken into account. Naturally gifted jumpers usually have a pretty even blend of strength throughout hence the reason they can typically do either.