Does Portugal’s Euro win have as much merit as the World Cup then given the European domination at the World Cup?
Disregarding the value of the different competitions in the sport to rate them on merit makes no sense at all. Federer would rather win Wimbledon by beating Cilic
and Anderson than win Queens by beating Nadal and Djokovic. That’s how sports work.
First, you compare a one tournament sample in both regards (Portugal winning ONE Euro, Europe dominating ONE World Cup) and I'm using examples of 4 years.
Second, both tournaments are set 2 years apart (not 4 seasons in a row).
Third, Portugal weren't knocked out by Croatia or France, they didn't even get knocked by a team that knocked another EC participant (which makes your rhetoric totally different to my example, but that's what you want anyway).
Fourth, they eliminated both WC finalists in overtimes, league games don't have overtimes, you can upset a single Elimination tournaments by "peaking" in the right moments, but a 4/5 year domination is based in more than that.
And the cherry on top, it's been a known fact for decades that European teams perform better in World Cups held in European soil.
So, there's two explanations there, for the past 90 years every great generation of European players has, somehow, coincidentally peaked on WC on European soil, or the "home" factor it's really important, and that's something that you can't translate to UCL football, as far as I know, each team gets a game in his stadium, you don't have a Real Madrid - Juventus leg decided by games on the vanuatu, or with both legs played in the Bernabeu. Comparing NT with Club level is just another of your "spin the wheel" attempts.
Then you go on and talk about a different sport, might use the NBA too like people were doing yesterday, or waterpolo, who cares, everything goes.