Darkprince wrote:He was going to step in because Goku's ki had been drained some from Yakon eating his light. Goku was seemingly confident about his ability to defeat Yakon normally, and only transformed to show he could brighten up the area, but then Yakon drained off his light and his ki. Rather than him transforming again and risking more energy being absorbed, Gohan said he'd step in with his dad so that they could beat him without either transforming. So while Goku may not be able to one shot him, the gap between their power isn't that substantial by any means, so Trunks wouldn't have to be much stronger than base Goku in the Buu Saga to be able to one shot Yakon.
I'm not arguing about specific gaps, I'm just saying is Yakon was at least in Goku's league, and Goku was well above Kid Trunks (Goku >>> pre-Majin Vegeta >>> Teen Gohan ['trash'] >~ Kid Trunks), and in GT Trunks is at a level where he can one-shot Yakon with a generic blast. So despite not training, he's powered up. That's my main point.
Darkprince wrote:Not just that, but the fact that a Bebi-Possessed Gohan would even consider him a worthwhile opponent to test his strength on. You say there's nothing indicating that Gohan lost his Rou Kaioushin power-up, but there's even less indicating that Piccolo suddenly shot up to high-tier Buu Saga levels of power just to be a punching bag. Other than allowing him to survive the Kamehameha (if Gohan were as strong as you believed), his strength would be basically worthless, given that he does essentially nothing outside of that. Nothing was said to indicate that he even had been training in any way to make himself stronger, and given that in seven years time, he didn't even reach Ssj2 levels, it is inconceivable that in an additional 15 years, he'd train to seriously make himself stronger and reach levels like you're indicating.
Like I said, training gains aren't static. It took Goku 22 years to go from 5 to 416, 11 months to go from 416 to 8,000+, and 1 week to get to 90,000.
His strenght wasn't completely worthless, he was confident and open to spending the rest of his days in Hell with past villains (Cell, Freeza, Rild, and HF17 - all stronger than Buu).
Darkprince wrote:This is Toei after all who made this, who is notorious for making Goku look better, and them weakening Gohan without any explanation is hardly outside their modus operendi.
All that would require is making Goku stronger, not making everyone weaker. In fact, making Goku outperform stronger characters makes him look better than making him out perform weak characters.