Chris Sutton won a league at Blackburn, the lad scored goals, lots and lots of goals funnily enough. He went to Chelsea and was a sensational flop. Was that down to playing in a different league? Culture or anything else for that matter? Did Sutton all of a sudden become bad over night?
What you are stating is merely misguided opinion. Fowler was another prime example, as was... funnily enough... Rush on his return to Liverpool.
Its all pathetic nonsensical arguement that makes no sense or proves nothing and completely fails to take a players ability into account.
As I said, every arguement you attempt to come up with has huge holes in it. Its opinion backed up by opinion backed up by... yep... you guessed it... even more misguided opinion. That is the exact reason why you bore the living ***** out of everyone.

Just to clarifty...
You're saying Rush and Veron "failed" because they "couldn't adaprt to a new country".
Yet... When Sutton "failed" at Chelsea, what was that reason? How do you know... (you clearly don't) that Sutton didn't "fail" at Chelsea and Veron "failed" at United and Rush "failed" at Juventus for the same reasons... IE style of play of the team they were playing for? Quality of the players around them? Quality of their individual attributes?
The fact is, you're using "opinion" as fact to back up an arguement and going against stone cold facts with opinion.
At this present moment, I'm failing to see how I can make this any more clear to yourself. You clearly only have the "GYBS way of looking at things".
There is more than one way to skin a cat... or are you to stupid to realise that?
My guess is you are.