You admit that it's evidence. If you just stopped there, that would've sufficed. Yet you feel the need to give a biased analysis of why you don't like the evidence.
When a scenario occurs that goes against typical behaviour, the scenario itself should be analysed. The scene demonstrates that: when a being comes along that can destroy everything, but that being is nuanced in the sense that he can be swayed from doing that depending on his mood, then Vegeta is willing to put his pride aside and not just fight his way through the issue like a barbarian.
Your surface level thinking has lead you to not think of the significance thoroughly. If a being like this came along again, then we can go off of past evidence as to how Vegeta would behave. There's no need to shy away from accepting this situational aspect of his nature. His general character can still remain while acknowledging this fact.
How Vegeta acts towards Buu and the others is a by-product of Beerus' influence. When identifying the cause of Beerus almost laying Earth to waste, it was fighting. You act like Vegeta deciding to talk rather than fight is bizarre, yet that's what we saw 99% of the time. When the Z Fighters attacked Beerus, Vegeta was on the sidelines telling them to stop instead of physically imposing himself.
It's not matter of "not liking evidence", but that if I'll have to get convinced and/or to believe someone's subjectivity, then I'll have to adopt those positions which are laughable and ridiculous. Your premise is simply conflictive with the history itself.
Yes, you're right, good work! Vegeta adopted that stance on Beerus and he is not up to lie even if he's not (he is) willing to fight Buu.
Of course, I am thinking in the possibilities of your theory, but has not encountered how it can work, if Vegeta would just dialogue with Buu, then nothing guarantess that Buu would hear him, even if (which he is not) not willing to fight. That is the most logical approach to a conclussion you have brought, which isn't enough. Do better.
So coming to a logical conclusion based on how the storyline operated is being dishonest?
We explicitly saw Vegeta initiate a conversation regarding Buu instead of attacking him. If he went up to Buu to give him a stern verbal warning, Vegeta would just be doing more of what we saw from him all the way through to that point, which is talk.
Could a fight break out as a result of things going sideways between them? Possibly, but this doesn't prove that Vegeta could take Buu in a fight, which is your premise.
I mean, when Vegeta was not feeling the need to fight anymore in the Cell Saga, he also contradicted himself in the Buu Saga. THAT IS THE AVAILABLE INFORMATION THAT WE HAVE OF HIS CHARACTER aside from what happened in the Freeza saga and how he acted in an stance that he objectively WASN'T WILLING TO FIGHT, it's up to you to prove it different and try to contradict the story for making your premise work.
Vegeta was not willing to fight Beerus, but also Bulma told him to defeat him, even after Buu got wiped. Saying that Vegeta would not be able to take on Buu is absurd, but also your premises are. Of course, Beerus told Vegeta he is disturbing, but that happens afterwards he offers to punish Buu.
Why would Vegeta attack Buu if he doesn't have Beerus' permission? But Buu would punch him and he is not available to talk which Vegeta would (again) began a fight. How can you expect patience of someone who is enraged or Vegeta, seriously?
Bulma was confident on Vegeta taking on Beerus, even though she saw him trash on Buu. Bulma is also aware at how strong the group is, seen as how she knows Trunks grew in the future or afterwards knowing that not even Goku could defeat someone so not even Goten and Trunks fused would be able to do anything.
So using facts and logic equates to dishonesty and lies in your warped mind...
There's two ways this conversation can go from here on out:
1) You continue getting bodied, or:
2) You just admit that you got carried away with speculation and that there is an alternative way of looking at this.
Wouldn't be surprised if you choose number 1.
Don't be ashamed to choose number 2. I won't clown you for it. It would show that you're willing improve yourself instead of being content with mediocrity.
That's childish as it can be, but considering your nature is not to amaze me as you decide to use childish tricks every now and then when something doesn't favour you and hold different angles in a hope your premise can be functional. Even then, you acting like this is very telling and tells me that you know you are lying (your being inside is different and doesn't have any confidence on their premises and so on) but from your character as a whole you're wanting us to sell a different image on how yourself are, sometimes even small pieces of someone true personality are very telling to how they themselves are.
If you think you're winning due to someone not responding you again and if it makes you happy, I am considering it as an option, but it can also depend at how you can say things, because the most you can do is entertain someone with those kind of things. Also, if you're not interested in objectivity, just tell me openly, you don't lose anything and everyone who reads this conversation pretty much can tell that.
You think you can treat me as your bitch, but your attemp was an absolute failure, and as predictable as you are, I can think as of now that you'll be in denial once again about this if you respond again.