In 4 out of the last 5 years, the PL has had a greater UEFA coefficient than La Liga. In the last 10 years their UEFA coefficients are nearly the same. So yes the PL is a yardstick for performance (40% more than Serie A and 76% more than Messi's Ligue 1). However the challenges are different in PL versus La Liga.
Imagine thinking PL as the yardstick for performance league when Premier League teams combined won CL 6 times in the last 30 years same number Real won in the last 8 years alone and Europa League/UEFA Cup 4 times in the last 30 years (2 less than Sevilla alone) in the last 30 years. You probably meant PL is the strongest league "now", which I agree, but still PL teams fail badly in European competitions. I mean your top team City is shitting the bed every time in the CL, it became like a meme classic. Even in its strongest era, PL teams simply fail to dominate and win things.
Also, When was the last time a team not named Liverpool, United, Chelsea won something in Europe? I checked it for you, Tottenham in 83-84, embarrassing tbh..
Imagine thinking Premier League the top league when most stars' first choice is Spain (was Italy in the past) especially for Latin, South American stars. R9, Romario, Ronaldinho, Rivaldo, Roberto Carlos, Figo, Messi, Xavi, Iniesta must have all made a wrong decision staying in Spain and are unproven.
How many Ballon D'or winners did Premier League produce in the last 30 years?
2, Owen & Ronaldo..
PL:
- Harder playing surfaces (especially winter)
- Packed schedules lead to fitness issues
- Slippier surfaces due to rain/moisture lead to fitness issues
- Rougher style of play leads to fitness issues
- Fight for CL spots is more competitive (especially 2nd-4th position)
- Colder weather leads to more muscle injuries
La Liga:
- Top-3 spots guaranteed to go to same 3 teams (based on last 10 years)
- Occasionally face a physical team like Cadiz/Celta but its mainly about ball possession & distribution so easier to maintain fitness
- Schedules better spread out
- Warmer/dryer weather leads to lesser injuries
PL has been inferior to La Liga in terms of technique & tactics, and guess what 90% of the time technique & tactics trump high-tempo game. No wonder PL teams have a special interest in importing managers from other leagues like La Liga..
Messi has a special interest in Premier League teams scoring 27 goals in 35 games vs Ronaldo's 33 goals in 84 games, Messi and La Liga teams it seems does not seem to care about the tempo, fitness etc. they just beat their PL rivals with their superior technique and tactics.
La Liga's above average teams easily are better than PL's above average teams. Sevilla won EL 6 times even beating creme de la creme of PL like Liverpool. Villareal (beating PL 2nd United), Atletico, Valencia all won the EL finals in the last 20 years.
Also, PL is 2-horse race between City and Liverpool most times or 1-horse race basically City competing against itself winning PL 4 times in the last 5 years..
Poorer version compared to who? The Zidane team? Of course every future Madrid team will look poorer compared to that team just like no recent Barca team can match up to Pep's Barca. Also - this is a Madrid under rebuild - so calling it 'poorer' is a very misleading term.
Vinicius/Benz/Valverde/Modric/Alaba would be starters in every team in the world.
Kroos/Rodrygo/Casemiro/Carvajal/Camavinga/Courtois/Mendy/Militao/Asensio and now Tchouameni/Rudiger would be at least squad members getting regular minutes in each and every team in the world. The PL big 3 were not beaten by a weak team.
This is 36 year old Modric, 35 yo Benzema and other veterans carrying the team, this Real is significantly weaker than the previous version, they were in no way considered a big favorite to win it this year, favorites were PL teams, yet they got beaten by Real one by one..
You do not seem to get the main point though, this is the weakest CL era of the last 2 decades easily, Italian teams are weak, La Liga teams fell from grace, this is the moment where PL teams are supposed to dominate, yet, it's not happening, your teams only can win here and there. The only era where one can say English teams had clear superiority is late 70s and early 80s, and that's it..
It's mainly Barca/Madrid/Atletico who were genuinely great teams during that period ... However, look at the league they play in today ... You think last year's Barca would have reached 2nd place in the PL? They wouldn't have even hit top-4. Same with Atletico.
Today's La Liga is definitely weaker than PL, that's why it looks bad for PL teams that they cannot dominate CL, Europa League even in an era when competitors from other nations are at a low point..