The ranking

It's an interesting survey of the ranking which countries roll out the welcome mat to travelers and which give the cold shoulder.

The "Travel and Tourism Competitiveness Report 2013" ranked 140 countries according to attractiveness and competitiveness in the travel and tourism industries.

The ranking result was 

Friendliest

1. Iceland  6.8 

2. New Zealand  6.8 

3. Morocco  6.7 

4. Macedonia, FYR  6.7 

5. Austria  6.7 

6. Senegal  6.7 

7. Portugal  6.6 

8. Bosnia and Herzegovina  6.6 

9. Ireland  6.6 

10. Burkina Faso  6.6

Unfriendliest

1. Bolivia  4.1 

2. Venezuela  4.5 

3. Russian Federation  5.0 

4. Kuwait  5.2 

5. Latvia  5.2 

6. Iran  5.2 

7. Pakistan  5.3 

8. Slovak Republic  5.5 

9. Bulgaria  5.5 

10. Mongolia  5.5

But I think it not always true but only one of the aspects. It's said
" There is no accounting for the tastes."

Speaking of Japan, is 6.8 the 74th of 140 countries. In addition to Korea and China is 5.5 the lower rank of them.
You might make use of it when you plan a  travel.

http://edition.cnn.com/2013/03/14/travel/friendly-countries/index.html