

Fast-forward to the fight with Super 17, and SS Goku is able to actually stand up to him, despite the fact that not even Majuub was able to do anything to him even though he was able to do more to Super Baby 2 than SS3 Goku was able to at the time, even after he regrew his tail the only way this makes sense is if he managed to, at most, rival the power he had as a SS4 when he fought Baby in his Super Saiyan state, which implies that at most he became an additional 80 times stronger, possibly even more if SS4 is stronger than a 4000x boost at most it would possibly be a 40,000x boost.
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Let's run through it all Goku's base state manages to reach around the same level of power he had as a SS3 when he fought Kid Buu, implying that he got 400 times stronger just from that, which is then boosted 4000-fold by Super Saiyan 4 at the very least. Well actually.GT Goku probably could by the end.
