There are zero similarities between the two.

Seven dragon balls, seven chaos emeralds, seven seems to be a popular number these days

*six

What

Id say not ZERO similarites but they but are great by themselves

Umm actually, one got inspiration from the other and had dozens of references

Literally the color yellow is the only thing Supersonic has in common with Super Saiyan

They can both fly that's one

Flying is just something Goku can do, it has nothing to do with Super Saiyan. Almost every other character in Dragon Ball can fly, even the non-Saiyans.

I was talking about super sonic, he can fly just like goku can in any of his forms