Super Saiyan 2 and 3 are nothing more than powered-up variations of Super Saiyan. After the fight with Beerus, Goku realized that mastering his normal state and Super Saiyan would raise his level more and sap less strength, so I think he probably won’t become Super Saiyan 2 or 3 any more.
As I thought, nothing to prove your point. And as Goku's level actually rise in training, DBS characters > Boo Saga characters is definitely possible. I won't bother to answer any further to your flimsy arguments.