Maybe a little controversial but I think this shows that these ratings aren't as reliable for defenders.

Fuchs is the only one who won the league in that season (although Trent and Liverpool were as excellent as most winners in 21/22).

I don't think anyone would have said that Otamendi or Fabianski had the greatest season of any defender or goalkeeper in the last 10 years and most would pick one of Van Dijk's Liverpool seasons rather than his Southampton one.