To keep this is perspective, this was 49 men with Magellan & 1500 with Lapu Lapu. This site
http://www.eyewitnesstohistory.com/magellan.htm seems to have the most accepted version of the battle and some other interesting links. According to the Encyclopaedia of SEA Ethnography, the Tausug probably came to Sulu from north-eastern Mindanao, possibly because of Chinese trade, Yuan period (1280-1368)