I wouldn't take a poll like that as gospel. There are too many ifs/buts/and 'rather not say'.
Looking at Denmark, it seems 11% decided not to tell the pollster what they thought. 13% for USA, 12% for UK.
That can mean a lot of things. From ppl in UK thinking it is too jingoistic to say that we UK are 'average' or 'good', or it could be worse than we think - people not wanting to say they really think UK is crap.
I luckily managed to get a bit of travelling in EU this year and to be honest, each country isn't as great as we in the UK tend to think they are - or at least I would say we are on a par with most of them - apart from Switzerland. Liked that one. Fing expensive for the likes of us peasants though. (Thought I got the exchange rate wrong. I hadn't.)
I would say that all have their issues but probably Switzerland and Denmark (I didn't go to Denmark so can't say really) don't have quite as many.
The rest of them - the natives are quite aware that of those issues - like we are, here in UK.
Except we think no one else has those issues.
Yes - train strikes - they happen in other countries.
Litter flying around as trash collectors on strike - yes, they can tick that box too.
Some dodgy road surfaces - oh yes.
Crappy politicians - yes the world over - isn't that a requirement to become a politician? Or does it happen the other way round?
What is it exactly we are worse at - or better at - than EVERY other country? Think we are pretty much the same to be honest. Obviously some countries do some things better than us, but some countries do things worse than us also.
An extra edit as this is quite important to the conversation......
Some of the people I spoke to thought the UK was exemplary. On a par with, possibly, what we think of Denmark or Switzerland. They would tell me this while I was grinning like an idiot and then they would gripe about their own area.
When I said we had similar problems they were usually quite shocked. This was not in every country or representative of any country - just a snapshot.