Goku to Vegetto Levels

[Goku9001]

That’s an interpretive issue. Gokan could definitely be a lot stronger than Vegetto.

The context is clear, Elder Kaioshin isn’t talking about Gokan.

The context is very clear. Elder Kaioshin compares Goku and Vegeta to every possible combination including Gohan and states that fusion as a result of two of the three strongest masters + rivalry i.e Vegetto is the strongest. That's not an interpretive issue. The comparison is embedded in Elder Kaioshin's statement.

Gokhan could definitely be a lot stronger than Vegetto but do you honestly think a badass fusion between Goku and Vegeta that is even stronger than Gogeta is weaker than Gokhan? By your logic, it definitely doesn't seem like he would be weaker.