Did Goku became stronger between Cell Games and Other World Saga?

Narrator statement says Goku have discovered masters better than him on Other World:

Upon this, we can conclude, Goku needs increase his abilities in order of fighting him. Then, Paikuhan said he have improved in such short time and him being better than thought:

However, the narrator said, Goku's finally showcasing his true power on SSJ form, which shouldn't be more than his FP CG self, which audience's very familiar with:

Your thoughts? If Goku had grown stronger I imagine he would be on between CG and Buu arc SSJ, more like, the expected increase Vegeta thought which he still thinks he could beat of Goku.

We don’t know the specific year of the Afterlife Tournament, do we? He might already be on his Boo Saga level, only yet to unlock SSJ2 and 3.

Though I prefer to have him only somewhat above his Cell Games power.

AngelBorninHell said:

However, the narrator said, Goku's finally showcasing his true power on SSJ form, which shouldn't be more than his FP CG self, which audience's very familiar with:

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Even after becoming stronger, Super Saiyan would still be Gokuu's full power. That doesn't mean Gokuu is equal to his Cell Games self; he still needs to transform to use his full power. As he got stronger in his normal form, his full power in Super Saiyan was even greater than it was at the Cell Games.

GreatSaiyaman123 said:

We don’t know the specific year of the Afterlife Tournament, do we? He might already be on his Boo Saga level, only yet to unlock SSJ2 and 3.

Though I prefer to have him only somewhat above his Cell Games power.

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Cell's death on this filler seems being treated as if it were something recent, so there shouldn't be much time passed after it.