Wrong, In my observation, common people in most 3rd world countries (but not all) are corrupt, lack ethics, are lazy, often stupid etc. Examples: Mexico, most African countries, China etc. Govt. are universally corrupt regardless of how developed the nation is, though they will vary to the degree to which they are corrupt.
We are taking common everyday interactions: small businesses, deals, trade, customer service etc. Americans by far ( and so would citizens of other first world nations) are relatively superior culturally when it comes to everyday interactions.