I’m not talking about from a fans perspective I’m talking about how players are judged and nowadays most modern footballers are the top see the champions league as the pinnacle of club football. World Cup is every 4 years and only a small handful of players get a chance to win it. It’s just not comparable especially to a SB.
I'm sure that if you interview 2,000 professional soccer players from the top clubs all over Europe and ask them, money not being the factor (sure, their salaries are paid by clubs), but in terms of their career dreams, what they would prefer to tell their grandchildren by a bonfire, once they were old and retired:
1. I once won the FIFA World Cup. I got this gold medal as a World Champion.
2. I once won the Champions League with my domestic club.
I GUARANTEE that given the liberty of picking, and if they could pick only one, 95% of the players would pick option 1.
Just look at the person we started this talk about: Lionel Messi. Look at the faces he makes and the tantrums he throws every time he tries and fails again and again to win the FIFA World Cup with Argentina (and the Copa America too, for that matter). Messi has won the Champions League multiple times, and the Ballon d'Or multiple times, still, you can tell how bitter and frustrated he is, because he never won the ultimate prize.
Is it not comparable to a SB? Well, it is.
Over here, we call the SB champs, World Champs. We know it's a misnomer, but our sport is just so overwhelmingly stronger here than anywhere else, that we call our club competition, a world one. I hear that before the diffusion of soccer to the four corners of the planet, before FIFA and the national team competitions were even organized, the Brits used to call their soccer champions, world champions. With American Football, we are in a similar situation. These days, there is an international federation of American Football, but it is still in its infancy and the quality just can't be compared.
So, the thing is:
Biggest accolade (being called World Champ), biggest accomplishment in the career of a soccer player: the FIFA World Cup.
Biggest accolade (being called World Champ), biggest accomplishment in the career of an American Football player: the Super Bowl.
So, yes, they are perfectly comparable.