" It actually does because Toppo already knew that Goku could use the Kaio-Ken x10 when he against Bergamo "
Goku didn't state what level he was using.
" and Goku even promised Zeno that he wouldn't hold back, or else his universe would be erased. "
Goku was holding back, considering Goku Blue and Vegeta Blue overwhelmed the combined strengths of Universe 9. To add further,
Toppois shocked when Goku turns Blue, clearly being surprised by Goku's power and even stated that Goku was "saving his power". There is no reason for Toppo to be surprised by Goku's Blue power if Goku's Kaio-Ken Blue was stronger or for Toppo to be surprised that Goku was saving his power by using Super Saiyan.
The rational conclusion is that Goku's Kaio-Ken Blue VS Bergamo was actually weaker than his full power in Super Saiyan Blue. Goku was holding back. It's either that or, Toppo can't sense Ki and was only surprised by the pressure of Goku's God Ki but I seem to recall several instances of Toppo outright sensing Ki.
"Toppo straight up asked 17 if he expects to beat him by spamming Ki blasts and 17 says no, not to mention 17 was running away the entire time."
18 outright answers that 17's entire strategy is just delaying the fight to exhaust Toppo. 17 isn't even trying to defeat Toppo in a one-on-one fight, they are both Blue-level at the minimum after all. If one person had infinite stamina and was equal in power to someone with limited stamina, wouldn't you focus on just exhausting the opponent to get an edge and win?
Hell, Toppo was being pushed back by 17's blasts and had to specifically find a gap to even escape it. If Toppo was so much stronger than 17, why wouldn't he be able to escape by overpowering 17?
Overall, 17 is just using a strategy to get an edge over an opponent he is comparable to. Toppo had to power up to defeat 17. Baseline Toppo is shown to contend with Goku Blue and Vegeta Blue, powered-up Toppo can fight SSBKK Goku and overwhelm Android 17.
" Theres a difference between holding back and not interfering in a fight. There's still no indication that Toppo held back against Vegeta, and Vegeta even beats him in the fight. "
There is also zero indication that Toppo was fighting with his true power against Vegeta. I can only assume that when you claim Vegeta 'beats' Toppo you refer to Vegeta nearly having all of his bones crushed, and flipping Toppo to escape his hold? Yeah, Vegeta and Toppo are both shown afterwards unharmed and observing Goku vs Kefla. If Vegeta 'beat' Toppo, it brings into question why Toppo wasn't knocked off. The only way Toppo would have escaped if 'beaten' is if Dyspo rescued him, but such a thing is never mentioned and is never hinted at as a strategy that the Pride Troopers are using.
Overall, no proof of Toppo using his full power against Vegeta. The most you can derive from this is Vegeta and Toppo being practically equals when Toppo may or may not be holding back.
"And are you forgetting how well Vegeta did against Jiren? He even lasted longer than SSBKK20 Goku without any amps, and even managed to land two hits. Vegeta would've been beaten down worse than Goku did. "
Vegeta had to adapt to Jiren to land just two blows. Vegeta
himselfeven states that Jiren was stronger when he fought Goku and is immediately curbstomped when Jiren reacts.
Hell, Goku Blue was even clashing with Jiren and surprising him in their first fight. Goku used Kaio-Ken to recover from Jiren's blows and didn't manifest the Kaio-Ken aura when he knocked Jiren through several Kachi Katchin pillars and was trading blows.
The absolute most that we can derive from Vegeta hitting Jiren directly is that he saw through Jiren's movements after fighting him, and could find a pattern to exploit for a blow.
Honestly, if we are going to use such feats, what about Base Frieza
tagging Jiren and knocking him through multiple platforms before he can even react? Mind you, this is Frieza after tanking the Hakai that warped the World of Void and after fighting GoD Toppo twice, so this Frieza is likely heavily weakened from all of his wounds.
And before you argue that it was 'a sneak attack'. Jiren
blocked Hit's sneak attack, who is the greatest assassin of Universe 6. Jiren is even stated to lack 'that weakness' of being left open when finishing opponents, which is the circumstance where Frieza sneak attacked Jiren in Base form.
Well, how strong is Hit? He was saved by SSG Goku against Dyspo but after adapting, he could defeat Dyspo pretty easily. Hit had to spend an entire minute adapting to Jiren to be able to land a single direct blow, yet a heavily damaged Base Frieza managed to smash Jiren through multiple platforms, wasn't knocked out by Jiren smashing him in the stomach into a platform and was stopped by Jiren's Glare when he went Golden.
So, Base Frieza can sneak attack Jiren, which not even the legendary Assassin Hit could do. Goku Blue can trade blows with a suppressing Jiren and even smash him through multiple pillars without going Kaio-Ken and Vegeta even states Jiren isn't using as much power as he did against Goku.
So, what is actually impressive about Vegeta adapting to Jiren and landing two direct blows? Jiren wasn't using as much power as he did with Goku. 17, Frieza and Hit have all directly struck Jiren (Albeit, Frieza was a sneak attack but at the same time, he was heavily exhausted after fighting GoD Toppo twice and only in his base form).
Based upon the circumstances provided, this still isn't ample evidence that Vegeta Blue is SSBKKX20-level. It still points to Goku, Frieza and Vegeta all having comparable power.