Disagree with lack of sharpness.
Not being exhausted would I think be more of an advantage than having played too many games.
"These are professional athletes" - they're still not super-human; the schedule for the key players of the top clubs of regular weekend + mid-week CL fixture is still incredibly demanding.
The Premier League is the most intense and physically demanding of all the top 5 leagues. Ligue 1 is the least physically demanding of all the top 5 leagues. The games are less draining, they have fewer of them, plus they can often win games and the league easily while resting key players due to standard of opposition. It would be easier for their key players to remain fresh to save their energy for the CL.
See this analysis from 2020, and the gap from the PL to others will have likely only increased since:
https://medium.com/skillcorner/lets...-big-5-european-football-leagues-bcb04ebb835c
https://www.espn.com/soccer/story/_...-league-such-tough-leap-other-leagues-players
eg:
I don't think that nothing competition really matters. Or are you saying that Enrique isn't all that and would be a failure in the PL with United 'cos his team lost to Chelsea?!...