If Gohan and Goten trained...

[SSJ2]

Let's say that Gohan continued training after the Cell Games, and in turn started training Goten once he was old enough to fight. If they had consistently trained since then, how powerful do you think they could have been by the time of the Boo arc?

 

[Captain Cadaver]

Moved to What If, since it is very much a What If.

Anyway, however strong they'd get is purely assumptive when Earthly training can range from minimal to godly depending on what the plot wants. All that can be said for certain is Goten would have the edge over Trunks at the Budokai, Gohan would kill Dabura and whether or not Boo even has a chance to be revived depends on if sparring with his sons was more beneficial to Goku than his Other World training. I'd say it most likely would be, so Vegeta still lets Babidi control him and Galu probably beats Vegeta before Boo's revival.

 

[Hector]

For simplicity sake, let's say Gohan would be his Post Z Sword self. Goten already trained, so I don't think he would be much stronger.