If you go to the home page and look on the menu on the left about half way down the page you will find the scales that you are talking about

http://www.harmonicalessons.com/scales.html

2nd Position Country Scale in the key of G played on a C harp:
G A B D E G

2nd Position Blues Scale in the key of G played on a C harp:
G Bb C Db D F G

Now just look at the tuning charts:
http://www.leeoskar.com/mjrshtfrme.html

OK if you are playing an F harp the 2nd position the country scale will come out like this:
C D E G F C
This is also know as the Country Scale played in the key of C.

If you play your F harp in the 2nd position the blues scale will come out something like this:
C Eb F Gb G Bb C
This is also known as the blues scale played in the key of C.

Now lets superimpose the two scales in different keys.
Blues Scale:
G Bb C Db D F G Key of G
C Eb F Gb G Bb C Key of C

Country Scale:
G A B D E G Key of G
C D E G F C Key of C

There are 12 notes in the chromatic scale:
C C# D Eb E F F# G Ab A Bb B C
When you get to the 13th note, the pattern repeats one octave up. Each octave doubles the number of vibrations. There are exactly 100 cents between each note in Equal Temperament, or 1200 cents in an octave. Imagine the 12 spaces between each of the 13 notes in the scale above having 100 cents each between them. In just intonation, the number of cents is varied to make nice clean small fractions like 1/2, etc. This is done to make the chords sound good. Chords sound horrible with exact Equal Temperament.

Now look at the notes above and consider that when you changed the key, each note played about 500 cents higher. This was changing the key, not the scale. Then look at the harmonica layouts in different keys. The proportion of the notes to each other is the same. You should be able to see that you play the harmonica in the same exact fashion when you change the key.

The blues scale has the following spaces between the notes in cents:
300 100 100 100 300 200
This pattern keeps repeating as you go up to the next octaves.

The country scale has the following spaces between the notes in cents:
200 200 300 200 300
Same thing! The pattern keeps repeating as you go up to the next octaves.

For all it matters, look at the C major scale:
C D E F G A B C
200 200 100 200 200 200 100.

The different scales break up the rythem in a certain way that give them what is described as Bluesy, Country, Awesome, or any other kind of experlative you want to describe them with.

Of course, I could give you cites and scales to alternative tunings that would give you the same notes without bending. Don't try this! Don't switch positions looking for the same notes on another scale. Stick to the same positions and bend the notes as prescribed to retain that same experlative sound regardless of they key you are playing in.

Dan