Regarding the Super Saiyan God, I feel that it is more accurate to say that it is not so much the power level as the power control level.

I watched the theatrical version: Dragon Ball Z Gods and Gods. Sun Wukong couldn't perceive Beerus with his qi, so he changed to Super Three and fought Beerus, Sun Wukong punched down, and the back of the world star exploded, and all the power was wasted. And Beerus 2 times, the first finger flicked the door of the brain, the corner of Wukong's mouth bleed, and the second time his neck was lightly touched, Sun Wukong fainted, and he didn't waste his strength at all.

And Beerus touched an egg with a flick of his finger, and the iron ball turned into powder, which is the complete control of power.

Beerus fires a death missile at the earth, and Sun Wukong once again transforms into the state of a super Saiyan god, completely destroying the death missile without exploding or anything. This is also the complete control of power, otherwise the strong power should be to push the air bomb away, just like Sun Wukong pushed Kwilla (Friesha Brother's) death missile back.

Beerus also said: "The fighting power is overflowing on the surface of the body, and it cannot be called a god." It shows that the combat power of the god's realm is completely converged and will not be wasted.

So what is the realm of "gods", I feel that it is to completely control the combat power that can erupt with me. For example, before the "God" realm, the effect of 100 force on the enemy is only 50 at most, but when you reach the "God" realm, you can achieve 100%. So after Sun Wukong became a god, he would say after making a few moves with Beerus: "I didn't expect that there would be such a realm!" ”

So Super Saiyan God may increase his strength, but it is not as exaggerated as the Super Saiyan 123 transformation increase.

Therefore, in history, ordinary 6 good Saiyans can also create "gods".