I mean he's right, Modern Yamcha would absolutely hand Gilgamesh his ass because the closest we can get for Gil is Star-Solar System level which Yamcha SHOULD be atleast above if you subscribe to the same shit that Super allowed Master Roshi to suddenly be onpar with Saiyan Beyond God Goku(or atleast not be instantly taken out by him).
It's a hell of a reach and Yamcha can technically wear down Gilgamesh anyway through sheer speed and still having enough strength to deal Gilgamesh a "Death By a Thousand Cuts" but it's still there.
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1. The fact that people keep using Star Rankings as canon is the funniest shit considering Jack The Ripper is a 5 Star and she's canonically weaker than the Hassans who are nothing to write home about past their abilities as Assassins to kill Masters while Arash is a 1 Star who canonically is Tristan's equal.
2. Roland is one of the strongest of the Paladins and a rival to Charlemagne in pure might and his bullshit version of Durandal(Which already has shown to be able to match up with Anti-Planet weaponry and still be completely intact) while having Diamond Tier defenses that require the strongest of Servants to do any damage outside of attacking the SOLES OF HIS FEET(which good luck doing that even with knowing his weakness) or sending a honeypot to bait him into losing his mind. If he was in Fate/Stay Night, he would be a powerhouse like everyone else is.
3. Saying ASHWATTHAMAN is irrational is not just disingenuous, it's literally against his legend as Ashwatthaman... is a fucking battle genius on top of being so damn strong, the reason why the war ended the way it did was because Duryodhana fucked up:
In the Mahabharata while Duryodhana lies dying with a crushed throat, he lifts three fingers to Krishna who subconsciously understands that Duryodhana had realized the three causes he did not win the destructive Kurukshetra War. The last and most important of these is that he did not make Aśvatthāman his supreme general ahead of timenote as this would have given him both the motivation and the position to guarantee victory.
This is also insane to state because the second Ashwatthaman was able to break out of God Arjuna's Curse, he created a plan that solidified God Arjuna's defeat... so how the fuck is he irrational?!
4. Again, why do people ignore that Saint Graph differences matter? Qin Liangyu being a 4 Star doesn't mean shit because her stats doesn't matter because Cu is on a whole different power than she is(Fate/Extella states the man is onpar with Karna and Samurai Remnant has him see Arjuna as someone worth fighting... I'm 100% sure Liangyu would be dusted fighting either). EMIYA being a 4 Star for this makes even less sense because F/SN explicitly shows EMIYA has NO CHANCE fighting Cu in a headon fight and only succeeded against Cu's absurd speed in the 2nd fight in UBW by using Cu's Bloodlust to his advantage to survive.
This is seriously some really stupid shit here and for what? To still downplay Ritsuka so Shirou can come off better in a field he would suck miserably on?(Because people love forgetting Shirou would get murdered fighting anyone but Gilgamesh because while he can copy stats and styles from the weapons he copies, that's ALL he copies while the Heroic Spirit knows how to fight inside and outside the box)