Sorry Doc, but that list is a load of bull. Serie A 2nd? Argentinian league 4th above the Bundesliga? That's crazy.
It's according their criteria which is based on factual statistics so it's not completely bs.
In 2013 there were quite different results.
We could use a thousand other criteria that would give different results but it doesn't mean that their one is not valid.
Anyway you can check their criteria here and it seems fair to me: http://www.iffhs.de/explanations-cwr/
I know it's not made up or anything, but it's criteria is clearly limited and ignores common sense. Because Serie A is not the 2nd strongest league, and the Argentinian league probably isn't even a top 10 league.
Some fans might boo Lamps. Just in a "You broke our hearts by going to City and we're showing our disappointment and temporary anger towards you, but deep down we still love you" kind of way. I dunno. I know a lot of Chelsea fans do feel a bit annoyed towards Frank for going to City, but I don't know of any who feel genuine anger or will let it affect their feelings towards him long term or anything like that, which is what you sometimes get when players switch to rivals. If he does get boos, the same fans that boo him would probably clap him and sing his name in the same game as well. It's a weird situation.