The Birth details given in the Astro data bank site are rated AA which means the details are based on the birth certificate and hence very accurate.
In the adjoining chart we can see a very strong Sun in Aries with a Shadbala of 165% and not aspected/conjunct with any malefic. Strong Sun in a horoscope shows spiritual inclinations and Sun in his exaltation in the Martian sign of Aries denotes a religious leader.
There are three issues of interest in this chart apart from the strength of Sun.The issues are :
1. Sun in Brahmalokamsa in Vaiseshikamsas ( which means Sun is in exaltation or own houses in Eight of the Ten Divisional charts(Dasa Varga scheme) .
2. Rahu/Ketu axis is falling on the Galactic centre and R/K are conjunct Mars and Pluto.
3.Mars the dispositor of Sun is significantly over the R/K axis which in turn as said in the previous point is on the Galactic centre.Mars is at 6 Ge in conjunction with Rahu at 7 Ge and in opposition to the Moksha Karaka Ketu in Sagittarius at 7 Sg.
These combinations establish the birth of an enlightened spiritual leader.
His Atma karaka being Jupiter makes him know the Vedanta Philosophy and Ketu in his karakamsa shows he would be interested in Astrology.Moreover Jupiter is in Aquarius,the raasi which signifies spirituality.
Data Source :
http://www.astro.com/astro-databank/Pope_Benedict_XVI
