No, its not. The stakes are much higher when representing one's national colors. The expectations of an entire nation, and the burden of pressure that comes with it, moreso if you're in a final. Under such circumstances, the most simplest of saves may seem hard even for the best in biz. Its not same at all, im sorry.
I disagree. I think it is the same (remember I said save - as in when goalies are involved). Unless you have time to analyse the situation and think about it (like a penalty kick), a lot of saves are reactionary. Scoring penalties or 1v1s or punching out corners/free-kicks on the other hand is an altogether different situation. Infact I can argue that keepers are far less complacent in a World Cup game. Admittedly, I wasn't really thinking when I made the Stoke/Netherlands comparison because it didn't really add anything to what I was trying to say...
And whilst you can say the quality of CL is better, to harmonize and play insync as a team in face of adversities, and achieve glory is a greater challenge and makes for a spectacle in its own way.
As for your other point, I don't necessarily disagree with it. However, I do feel there is far far more luck involved in winning a World Cup than in a Champions League. We need to keep this in mind especially if we're using a World Cup win to judge a player (which was what my original point was about).
(1) It's a 1 month competition which means a player who is injured for that period has no chance at all of representing his nation.
(2) Keeping your form over a period of 1 month is a lot easier than keeping it for 10 months.
(3) You have to be lucky enough to be part of a well-balanced team to have a chance of winning.
(4) As you alluded to, a player has to gel with his team-mates in a short period of time to perform to the best of his abilities. The manager has a short period of time to make the team gel as well. But is this really a skill that needs to be valued when judging a player?
(5) Penalty kicks are a very real possibility in World Cups. Now, of course, there is a degree of skill involved in both scoring penalties and having the calm to execute them (and even saving them too). But one can still argue that they are a lottery.
Inspite of all these reasons, the World Cup continues to be a dream for players and fans alike. I already mentioned 2 very big reasons for that happening. All I'm saying is that using it to judge a player would be wrong.