If i had to train natural I would walk around 12-15 % and powerlift with arm training. And just very little leg training from seeing people train in institutions its very clear to me you can hold more upper body muscle with less leg muscle as a natural I don't care what supersquats or old sources say if your natural and your legs get bigger it pulls from you upper body. Common knowledge in natural powerlifting
Not only is this true, ripped legs make it harder to have a ripped upper body. The body has to hold fat/water somewhere. My legs are shredded, arms too, any excess weight goes to the stomach and chest, which to get close to ripped makes me so hungry i have to eat junk.