h0kuten said:
So Goku trained. It doesn't show he got stronger.
Goku could already beat Buu, he just messed around too much and lost stamina.
Battle of Gods & Dragonball Super.
You have literally no evidence and simply speculate. That's all you do.
1)Oh I forgot, Goku train as hard as he can for nothing, despite the fact that he said that he'll train to win a one-on-one fight against Boo.
2)And now he toyed with Boo ? He stated that he'll go all-out from the start, he stated that he tries to beat him. Do you want to rewrite the manga while you're at it.
3)Weren't you the one who speculated that Goku couldn't get stronger because he was too old, despite the fact that Vegeta is 5 years older than him and was more than able to get stronger, as stated by Whis ? Yes, that was you. Talk about hypocritical. There's a lot of statements with "we can't beat him", "there's one way to win". Taking all of them literally, training wasn't an option, despite the fact that they surpassed their opponents later.
Goku didn't have the time to train in order to reach Beerus's power (or at least, the power he thought he had). Do you think he'll ask him :
Right Lord Beerus. Just let me 20 years of training, so I'll be strong enough to defeat you ? No. None of them thought of this solution while dealing with others opponents, so why they would now ?
If you don't take into account the context, it's obvious that we're going to disagree. If you think that Goku realized that he can't get stronger by training just because he lost a battle (while it had the opposite effect until now), be my guest. But you'll never convince me with your current arguments. Let's just agree to disagree. This debate will take forever otherwise.