If we bring the Boo saga into it then that'll just turn everyone against me even more
If there's any opinion I have less popular than Gohan not being that far above Goku, it's his SSj2 power, and the fact he had a rage boost the entire time, meaning we essentially don't see a regular SSj2 Gohan in the Cell Games. This means I have Goku and Vegeta in the Boo saga far above regular Gohan from the Cell Games, but just a little above rage boosted SSj2 Gohan (or in Pre-Majin Vegeta's case, below).
I used the topic in a debate tournament almost 3 years ago so you can see my reasoning:
http://dbzf.co.uk/topic/8402687/1/
Might need a bit of updating now, but the idea is still the same.
Then again, even some people who don't give Gohan a rage boost the entire time will give him one during the final beam struggle, so that could just as easily have been the power everyone referred to. It's just that both comments relating them to Gohan came after they turned SSj2, so imo there was something unique about SSj2 Gohan from the Cell Games (aka rage boost) that meant those comments couldn't have been said in regards to base/SSj Goku and Vegeta.
We know Goku is dead set on Cell having reserves otherwise he wouldn't be banking so hard on Gohan having to become enraged. That's why he gave Cell the sensu. It's all about Gohan enraged vs Cell's full power.
If Goku never gave Cell the sensu, Gohan would be winning easily but Cell would bring the reserves out.
How would Gohan have been winning easy? Isn't this about determining if Gohan is above Goku but below Cell? When did it become decided Gohan was definitely stronger than the Cell Goku fought?