I wouldn't quite say "making up" when I am basing my opnions on this matter on recent footballing history & the importance of squad competition.
Actually my ultimate point was if Guardiola wants to dominate Europe has he has done in the Premier League; he needs to get addtional world class players. Which is less "he should not be judged in Europe" (1) and more "This is why he has yet to win the Champions League and this what he needs to do to address it".
(1) Especially when I am making judgements on his record in the Champions League with City.
Teams that have ended up writing off other competitons to focus on the Champions League when they both faced City; hence why Liverpool effectively abandoned both Domestic Cups and have been effectively forced to decide between winning the Champions League & winning the Premier League for all of the last 3 seasons while Tottenham had all but abandoned the Premier League (other than when it comes to getting Top 4) & both Domestic Cups by the business end of the 2018-2019. So when they both faced a team that is fighting 2 difficult fronts with the resources of 1 (especially with a suspect defence), it not really that much of a surprise that they end up both beating Manchester City when you look at it.
This is not saying that it's perfectly acceptable for Manchester City to lose to Liverpool (in the CL) in 2018 & Tottenham (in the CL) in 2019, but rather an exposure of how both Guardiola & (especially) Begiristain have failed to build a good enough squad to Dominate both Domestically & in Europe, despite having the resources to do exactly that. Otherwise they would have been more than able to knock out both Liverpool & Tottenham out of the CL while at the same time winning Premier League's with 95-100 points & winning Domestic Cups for fun.
Not every team is as good as Liverpool (and on their day) & Spurs, one has to look at our current squad for example.
Did you actually watch both those games back in 2018? Because I did and it was pretty clear that City where underperforming in both games, with fatigue being the biggest likely reason why that was the case. Although to be fair, playing Otamendi didn't exactly help their case.
I did watch the games and it would appear to be more of a mental collapse for me.
We'll have to agree to disagree here as I'm not having that he needs 8 more WC players to win the CL. He had good enough squads to do it at both of his last two clubs.