I just saw this topic and it seems lot of arguments going on for no reason. Well, this statement 'one Pak soldier is equal to 10 Indian soldiers' is nothing to do with Pakistani being martial race or propaganda for morale boosting. It has basis from Quran with assumption that Pakistani soldiers are Momin (Muslim with complete Iman) and Indian soldiers are not.
Actually, if army consists of Momins then it is obligatory for the army to not flee when facing an army 10 times the size. Though, Allah later lightened this requirement for Muslims and thus it is obligatory for Muslim army that they should not flee when facing army twice their size. The basis for above statement is Quran surah Al-Anfal (8), ayah 65 and 66:
Surah Al-Anfal (8), ayah 65 (for one Momin better than 10 enemies in war):
YUSUFALI: O Prophet! rouse the Believers to the fight. If there are twenty amongst you, patient and persevering, they will vanquish two hundred: if a hundred, they will vanquish a thousand of the Unbelievers: for these are a people without understanding.
[Note: 20 will vanquish 200 ... 100 will vanquish 1000 ... means 1:10]
Surah Al-Anfal (8), ayah 66 (for one Muslim better than 2 enemies in war):
YUSUFALI: For the present, Allah hath lightened your (task), for He knoweth that there is a weak spot in you: But (even so), if there are a hundred of you, patient and persevering, they will vanquish two hundred, and if a thousand, they will vanquish two thousand, with the leave of Allah: for Allah is with those who patiently persevere.
[Note: 100 will vanquish 200 ... 1000 will vanquish 2000 ... means 1:2]
Above ayahs mean that a Momin would never flee even when facing 10 times the number (or even more) and would hope to win, as his iman being complete would have complete trust on Allah. On the other hand, if a Muslim flee facing an army more than twice the size than it is acceptable (not sin ... as Allah has lightened his commitment), though it is obligatory for a Muslim to have faith and hope for win, and not to flee facing enemy twice the size.